Mid-Morning
April 20th, 71 BNM
Baltimare, uptown area
Trumane manor
Master bedroom

Bursting into the bedroom, as the maid was being consoled by one of the guards, the other guards saw the dead body on the bed. A bronze Alicorn, lying there, unconscious and dead to the world. Aubelles was dead.
"Search the grounds, find Lady Trumane, she was in here last with Lord Trumane, they must know what happened!"
As the guards left, the head guard scowled at all that was going on today, before storming out himself.

Trumane manor
Main gardens

Striding out in the gardens confidently, 'Lady Trumane' and 'Lord Trumane' waltzed out through the paths of flowerbeds.
As she nuzzled his neck, the disguised Iena remarked coyly to her 'husband':
"Have you fully accepted?"
"Yes. Just this little stroll to calm myself before we both plunge into what is to come." Aubelles remarked, the disguised Alicorn sparing a glance back towards the manor towers, asking once more:
"But, what of the real Lord?"
"Hmm, I had some confidence that you would see my way is best. So, this whole time, he's had a toxin in his body. He would have died about, 15 minutes ago..."
"What!?" Aubelles suddenly turned stern, stopping their walk as he pulled away from his 'Lady'. Surprised, she spared him a wary look:
"It is done. He is dead, in your name. And you assume his in life by my side. I thought we had agreed to this?"
Hesitant, Aubelles turned away, as he replied:
"I could still out you, come clean..."
"My love... You would choose a path so much less easy then what I offer you if you did that. And you are much too intelligent to make such a foolish move."
"Do you always lock in those you ensnare like this?"
"Only when I am certain they have chosen my way. And in return, you have gained so much...and I in turn."
"I, this is..."
"Everything you ever wanted?" Iena approached him gently, her Lady Trumane disguised lips drawing to his own as she breathed the words to him.
"Yes... But something doesn't feel, right..."
"Let me, you are strangely resilient to me reading you mind, your desires. All the more reason you are so alluring to me."
"I offer only my best at whatever I do."
"That you certainly..."
Her eyes narrowed slightly, right before she kissed Aubelles yet again, as she noticed a faint green twinkle from his horn.
"What is that spell you have been casting this whole time?"
"Uh, just... I actually can't..."
"It is not your magic, let me clear it of you..."
With a flare of her own dark blue magic, Aubelles's horn was cleansed of the green magic spell he'd been using.
As soon as she cleared it however, green electrical arcs consumed her, earning an unearthly shriek from her as she recoiled back. As if snapping from a trance, Aubelles backed up sharply, alert as he saw Lady Trumane before him writhe and change in appearance. His appearance altered, no longer disguised as Lord Trumane, reverting back to his bronze Alicorn form, combat ready and smiling at the deceit on his part:
"You've been entrancing me the whole time, but so have I, and you fell for it..."
"What did you do to me!?" Iena screeched, punching the ground with a hoof as her green magic writhed at the disruptive curse she'd unwittingly stockpiled upon herself.
"It wasn't easy to do. Subtle, repetitive even as you bedded me, you made it hard to focus at times. But like enough pinpricks to a waterskin, you took one too many and shattered yourself."
"This magic was not you own! WHO!?"
"There they are!"

Glancing around, both saw the guards swarming from the manor, the leader calling out to Aubelles in particular:
"What is going on here, what have you done to Lady Trumane!?"
"Open your eyes, she is not your mistress!"
At Aubelles's words, Iena reverted at last to her light green pegasus origin, the mare stumbling as more green magic consumed her body. Now, as she glowed, more magic altered her, as her control was lost.
Her flanks became serpentine length, her forelegs two arms with claws, her head reptilian with black Changeling and green Siren features, a mixture of changeling, Siren and Naga with fierce blue magic burning in her eyes.
"There is the one responsible for the death of your Lord, and your Lady!" Aubelles roared.
But as she saw the guards point their spears and magic at not just her, but Aubelles too, Iena cracked a small smirk:
"We found you dead in the main bedroom minutes ago! Explain that!?"
"She disguised Lord Trumane, not me! She wanted me to take over, I stopped her!"
"Deceit from both! You collaborated with her more likely!" The guard captain accused, at which Aubelles balked, before turning his furious gaze towards Iena, who merely smirked with her teeth bared, hissing at him:
"Ruin somepony else in defeat if you can..."
With that, she darted off in a slithering fashion, her dark blue shields and serpentine motions dodging the spears and magic hurled at her, before she sprang over the wall of the gardens, into the streets beyond. Green magic arcs writhed around her as the disruptive micro curses still affected her, and as she landed in the streets horrified cries went up at the sight of her.

In the markets just outside the manor's garden walls, foals and fillies ran for parents, as older ponies recoiled in horror at the sight of her as she slithered through the streets. As she slithered, Iena couldn't help but feel her determined frown fade, replaced by shameful tears.
But as she heard more cries, and the sight of a bronze Alicorn taking off from the gardens in pursuit of her, she scrambled into an alley, her heartbeat racing. Slamming into a wall in her panic, as her teleporting earned her more green curse magic holding her back from doing much magic, her distress rang out in a frantic scream.
And that scream was heard by more than was realized.

An unseen energy reverberated from her with her gasps of pain and panic. She felt something in her, something buried, hidden, primal.
Spreading across the city, an unseen shockwave of dark magic, faint but detectable to those who knew how or were attuned to it, shot out.
Waves of distress, danger, panic.

Baltimare town outskirts

A blue flash inside a grain storehouse's alleyways signalled Starswirl's appearance, but as he panted at this rapid teleportation's toll, something alerted him.
A dark energy had rung out, riddled with distress and fear, and anger. A call for help.
"A call for aid, one of them..."
The Wizard turned his gaze towards the barely discernable waterfront buildings, where he sensed something else.
"Another one is here... and Chack!"
He vanished in a blue flash, heading for the impending danger he sensed out in the bay.

Baltimare harbor

Chaos unfolding outside the Trumane manor was becoming second fiddle to something greater.
The sound of bells from out on the water echoed, as the bay was now clear, no more morning fog to obsucre any ships out on the water.
One grizzled sailor stallion looked out to see the merchant ship capsize far away, slowly sinking all of a sudden without warning. Nearby it, one smaller dinghy sized boat was dragged under as if yanked from below, a splash of water violently rushing up in the distance as it vanished.
Over the bay, sea birds flocking about began to fly away in flocks, away from whatever it was.
He could only look on as more sailors like him saw the sight, and something began to create a wake beneath the surface, heading for the larger docks, before the wake suddenly vanished.

Baltimare main docks, waterfront

Chack glanced down as he dashed across a raised waterway, heading for the commotion that had begun unfolding in the direction of the garden markets near the manor area.
But stopping, he felt his green sword heat up slightly, as he saw its glow become pronounced, like a heartbeat.
"She's calling for help..." He murmured to himself, but as he glanced up, he sneered before dashing off still in the same direction:
"So Aubelles succeeded at least in outing her."
Leaping across another wharf, Chack ignored the few pony heads turning to him as he ran across market stalls on the fishing wharfs. But as he heard a few screams, he stopped, leaping down to land on all fours on the ground, a few ponies paying his twin sword armed state less heed.
Out in the bay, rushing towards the boatyard 200 feet from them, a small dinghy sized ship was being rapidly folded in on itself as it sunk, and was violently ploughed through the water. In a crash of wood timber and sailcloth flying, the boat was all but launched into the boathouse.
Ponies began to flee, but whatever was surging under the water to slam the boat there had already begun moving.
Chack saw a faint glimmer of orange beneath the disturbed water, and his face turned set as stone.
Up on a roof, Chack glanced to see a blue flash, and a familiar wizard catch his eye.
"Find the other!" Chack bellowed, as the waters near him all but exploded.
A massive surging shape rose from the water, glowing bright orange as molten rock while it engulfed the docks. Tendrils shot from its writhing mass in all directions, striking and destroying building walls and melting structures where it touched, dissolving them in its acidic, consuming touch.
Unseen screams made Starswirl aware of this consumer's glut for carnage, but it was a green shape, an energy sphere, that it had engulfed around that made him worried.
Pushing off from the shore, the gigantic mass, like an orange jellyfish almost, split in two. One half took Chack, engulfed in his green shield, off the docks and hurled him out into the bay as if launched from a catapult, all but spitting him from its innards like the green marble he appeared as on launch.
But the second half took the shape of a soft bodied Minotaur, pounding and writhing its way up the street, acidic burned footprints in his wake. Without pause, Starswirl charged his magic and gave pursuit, not seeing any creature move like this in his life.

Sensing the Wizard trailing him from above on a floating magic platform he flew on, Satio paid no heed to the Unicorn. The part of him that took the Salamander that tried to get him out of the way had a simpler task, to pursue him out in the bay. But now Iena was in danger.
"I'm coming Iena!"
Charging up the street, his hand and footfalls burning wherever they touched, he felt a few fired spells from the Wizard up on high, as well as a few odd city guards attacking him.
Tendrils sprouted from all over his orange hued minotaur body, seizing anything he could. Food cart fruit and vegetables, a living chicken, even a bag of unused plant seeds. He absorbed them directly through his skin as they were sucked inside him. His body grew, but he used the orange energy and fired it back.
One blast hit the nearest guard, and all but disintegrated half of the small house behind him too. Other spells, all of them dissolving or disintegrating whatever they touched, made glancing blows or misses wherever they went.
Coming to a halt in the middle of a street, the orange hued Minotaur hesitated at the sight of the dozen guards before him, spears and horns at the ready. Further back, coming to leap off his hovering magical platform, Starswirl bellowed:
"Surrender now, before things grow worse for you!"
"If I do not get to her, they will!"
Satio bellowed back to the wizard, before his body began to expand all of a sudden, inflating into a sphere of orange mass before turning to a swarm of locusts before them, swarming from the street and visibly taking lots of small bites out of anything, even the building roofing around the street.
As the swarms took flight, the guards flailed as they shot magic and spears, while one guard visibly yelled as he threw away his spear, the weapon being eaten by a few of the slower orange locusts.
As Satio took flight, Starswirl's powerful shockwaves of blue magic buffeted the swarm, too disperse to be truly harmed. At the sight of the wizard having come to Baltimare of all places, some guards recognised him as the royalist aligned Starswirl.
"What are you doing here Royal scum!?"
"Dealing with the same menace that plagues you now. You can take our allegiances to their conflict at a better time!"
Without another word, Starswirl flew off on his platform, the wizard flying high up over the city to try and see where the threatening creatures were. On the ground, the guards shared a wary look between themselves, but it was silently agreed that there were more dangerous things than mere Royalists here today.

Baltimare harbour

Swimming to the surface, his shielded form having been hurled halfway across the bay, Chack broke the saltwater's surface with a dizzy head.
"Salty, as long as I'm not in too long..."
While his gills allowed for him to survive underwater, like all Salamanders, the salinity of seawater meant to do so for much more than a few minutes would be unhealthy, lethal after too long even. But with what was pursuing him the saltiness of his surroundings was the least of his concerns.
Swimming fast, his swords trailing on his belt as he swam briskly towards the nearest ship, he saw the distant surge of water as the part of Satio that he had broken off from himself gave chase.
Like a gigantic whale, hued in orange and surging towards him, it was not fully Satio, but an animal like copy of himself bent on pursuing the Salamander.
Diving slightly, Satio dove out of the water, landing roughly on the deck of the Nationalist naval ship.
Approaching him, the captain, a clean cut Unicorn stallion, demanded of him:
"What the devil is that out there!? Who are you?"
"A monster, and dead if you don't help!" Chack quickly rebuked, rushing to the edge of the ship's railings as he saw the whale sized creature still heading right for them. Pulling out his green sword, Chack saw the Unicorns on the ship already rushing to the railings and pegasi flying up, crossbow and spears being hurled at the creature along with spells. But as it drew closer, the groan of its hunger and power rumbling the entire ship, Chack let loose only a single swinging blast from his green sword, only to see it dissipate on the creature's hide.
Surging forth in a spray of water, the orange glowing bulk smashed into the ship's stern, veering the ship around, one of the largest in the Nationalist navy, as if it were a log in a pond. Unicorns were thrown about, and an anchor came loose and smashed across the deck, nearly crushing one Earth pony stallion who dove to cover from its impact on the bow.
"Cap'n!"
Looking around suddenly as seawater flooded the deck from the violent move, Chack saw one of the younger deckhands scrambling away as an entire section of the ship's bow gave way, collapsing into the water as it had seemingly been dissolved at joints. The captain clenched onto the rigging that came with it, scrambling up as the whale sized creature began to circle, a long drawn out rumble echoing in the waters around them. Almost like a stomach's growl.
For a brief moment, it vanished under the water.
But like a geyser it emerged right beneath the severed stern segment in the water, engulfing it as its bulk seemed to morph like a set of blunt jaws, crushing and absorbing the wood and unfortunate crew. Up it rose, blotting out the sun on the horizon, a devilish orange hue, and a thousand tiny tendrils from its sides.
As it rose up, Chack glimpsed the creature's bulk, as did the sailors on the ship, and they saw the horror within.
Remnants, traces, barely visible inside, of buildings, wood, and what looked too eerily like parts of what were once ponies to judge as anything besides that horrible truth. It consumed like the most ravenous of creatures, and withstood even their best weapons.
Seeming to hang in the air, its bulk began to come down, first crashing into the large main mast of the ship, splintering it with sounds like lightning bolts going off.
Leaping and darting towards the bow, Chack braced as he saw the massive form slam down onto the ship's stern end, and the Salamander was catapulted into the air, along with countless articles of debris from the ship.
Flipping in the air, Chack kept his weapons close, but he glimpsed enough of the now sinking ship to see what was writhing in its remnants. Orange tendrils yanking sailors here and there, and anything from the ship's cargo. An appetite that extended to anything it could ingest.
The sea greeted him, and as he was slammed down into the water, he felt rigging grab his ankle and drag him underwater, before he quickly untangled himself.
Able to see through the waters, Chack warily saw the sinking wreckage of the warship, and the massive orange bulk moving through it.
It snatched barrels and sailor ponies as it burst through, living or dead, before it began making a line towards him.
Underwater still, he gripped his green sword, the glow intensifying as his challenging words to the incoming monster magnified underwater:
"Damn you! You're whorish friend will have nothing to mourn!"
Right before Satio's animalistic double tackled the much smaller Salamander, it dove upwards underwater, before diving right on top of him, a green shield bubble protecting him from being fully absorbed as the whale sized creature's forest of tendrils gripped and slashed at the shield, dragging them both deeper under, down into the bay's lower depths of 200 feet.
Down, deeper they went, the pressure building on Chack's shield, until the bay's seabed came rushing up to him. A dust cloud billowed up as Chack was crashed down into the silt, the whale sized creature swimming over his head and blowing up a much greater cloud of silt underwater.
Flickering from the shock, Chack's shield gave out, and water came quickly flooding in all around him. Taking a breath, the pressure much for him, he knew he could endure saltwater much longer than this creature might let him live if he was overpowered.
Locking his webbed feet onto the seabed, the silt obscuring the sunlit bay waters around him, Chack pulled out his second, personal sword, only the green glow of his enchanted blade lighting enough of the silt masked depths for him to see.
All around him, orange light reflected, and the hungry grumbles of the whale sized creature echoed.
Steeling himself, his gills flickering in irritation at having to use saltwater, Chack readied his stance as he sensed the first attack attempt.

Meanwhile
Baltimare, main aquaduct bridge

Flying overhead, Aubelles ignored a few panicked onlookers in the streets below as he searched.
"Where is she!?"
Glancing about, he'd lost sight of Iena as she fled through street after street. Taking a sweeping glide, he came upon the main aquaduct that serviced Baltimare, the bridge structure taking water that had flowed from the hill based lake a dozen miles away into the city's mill areas.
Flapping his wings, he hovered to a stop over the running waterway, 50 feet above the city ground below, eyes alert.
Glancing around, he saw a flicker of scales, and he tore down towards one of the water wheels that fed off the bridge's smaller outlets.
But coming around, he saw nothing, just a faint dark blue magic smoke evaporating before his eyes.
As he looked about, a mocking laughter took his attention, while he flew up and alongside the aqueduct bridge:
"Your little trick you put on me hasn't weakened me entirely. But deceit can involve more straightforward means..."
"Like illusions?" Aubelles accused, as he shot his bronze magic at a flickering serpentine tail from behind one of the arches of the aqueduct bridge. It too vanished in a puff of dark blue smoke, after which Iena's voice carried on the air yet again:
"Strong and smart. A shame, you would have made a perfect partner..."
"Despite all I've heard of you and your ilk wishing death on Alicorns? You arranged even an unborn one's death!"
"Not all. Every kind has its useful ones, and lesser ones."
"And you decide that I take it?" Aubelles spat, flying up to the top of the aquaduct bridge, his hooves balancing himself on the edge of the bridge's waterway wall as he landed.
"I consider myself a good judge of character. My skills would not work if that were not true." A mild laugh preceded this remark, carrying on the air as Aubelles flapped his Alicorn wings in aggravation, his sword hovering out beside him and at the ready.
"You misjudged me, I didn't fall for your seductions."
"Only because I didn't anticipate you putting pride aside enough to accept whoever provided you that unique spell. So I suppose there is one thing we can agree on."
As he stepped, Aubelles felt a shiver all of a sudden, as he saw a dark blue smoke surround him, and swirl before him.
"Though if I might, Aubelles dear... You might have wanted to do that curse to me more before turning on me. It does not exactly last forever..."
Materializing before him, Iena's face was first, her siren ear flaps flickering slightly as the rest of her serpentine body and lithe arms came into being. Her lower naga body coiling into the flowing Aquaduct water slightly, she put a thoughtful hand to her chin as she regarded Aubelles's sword out stance before her, both stood atop the Aquaduct bridge now, the sound of soldiers in the distance and more chaos unfolding.
"What is the matter, do you not find me alluring like this? Do you not like what you see?" She gestured to her body, to which Aubelles rebuked:
"Somepony might if it were not belonging to one so evil inside. I see nought but a murderous temptress."
"Two can play at that. I see an Alicorn who is now guilty of killing Lord Trumane and Lady Trumane in collaboration with me. If you did have the capacity to kill me, you would do nothing to salvage your own reputation..."
"Words and deceit are your weapons, I doubt your combat can compare..." Aubelles smirked, his bronze horn glowing as he fired off a barrage of spells at her. Slithering and using her own dark blue magic, she deflected the blasts before she charged her throat, and with a strained facial expression, unleashed a screech that would put a banshee to shame.
The water in the aquaduct rocked as the scream shot towards Aubelles, the force of the magical scream enough to blow him backwards. The Alicorn collided with one of the waterwheels, his shields protecting him but breaking the wheel off its hinges, sending it crashing to the ground.
As she slithered towards the edge of the Aquaduct, a hissing grumble from the skies alerted her to Satio's presence.
A swarm of orange locusts flew towards her, but were shot off course repeatedly by a powerful Unicorn floating on a magical platform, almost as if standing on a blue hued coin floating in midair. Sensing her partner, she glanced down towards the streets below as Satio's locust swarm form seemed to gather like a waiting cushion.
"Yes, together..."
Leaping off the edge of the Aquaduct bridge, Iena winced as Starswirl's magic shot out, catching her tail in midair and hooking her, pulling her skywards. But the locusts swarmed around her as they came up to engulf her, her own body glowing bright blue as it changed shape.
Slipping from Starswirl's magical grip with a scream of pain from the magical feedback it gave off, the mixed form of Iena and Satio's conscious half gathered into herself, a massive whirlwind of dust thrown up as something burrowed into the ground where they merged in a blinding flash of light.

All around the tunnel mouth in the streets, as the surrounding mill area had been cleared swiftly, guards readied, as the first tremor came.
Flying over to hover to a landing atop the Aquaduct, Starswirl scowled towards the hole, and then warily towards the harbor where he sensed another and Chack in battle unseen.
Flying up to land beside the Wizard, Aubelles landed roughly in the flowing waters, his own flanks and fur drenched from landing where the water wheel had collapsed into on his impact.
"We're allies against these demons, do not get used to this Wizard." The Nationalist Alicorn growled to Starswirl as he stepped to the edge of the Aquaduct bridge, to which Starswirl grimly replied:
"I might have to, if the ordeals they cause us endure..."
More tremors rocked the ground, as a few shouts rang out. Out on a section of street, a part of the streets collapsed in a small crater, as one of the guards was violently dragged underground by an unseen being, a grumbling hiss escaping as the guard was silenced beneath the disturbed stone and dirt beneath.
All of a sudden the Aquaduct began to crumble, an entire section of its viaduct structure beginning to crumble and collapse into a slope, the water sloshing like a shallow waterfall all over the place as Aubelles took to the air, and Starswirl backed up to the non-collapsed section.
Bursting from the ground, coiling around the still intact viaduct support structures, a new creature emerged. Reflective orange plating covered its coils, but dark blue glows permeated its scales. From its mouth, a pair of long, arm-like pincers dripping orange acid flailed, as a mouth, circular and riddled with teeth, clicked and hissed as its serpentine length came to rear up over the Aquaduct's length, towering over Starswirl as it did so.
But its dark blue eyes focused on Aubelles up above as its back opened up, revealing a few dozen small demon-like pegasi flying forth on clouds of dark blue smoke, skin a mixture of scales and digestive orange flesh of Satio, nestled in the crooks of her back, cackling menacingly.
But as her voice hissed from the monstrosity's mouth, as if one of the great Tatzlwurms had sprouted two gigantic mandibles and grew orange armour plating, it was clear that Iena was in charge here:
"I shall destroy what cannot be mine, feed his hunger and my own scorn!"
Rearing her monstrosity's head upwards, a dark blue haze erupted from her mouth like a volcanic vent, as its sprang forth to spread like a fine mist over the city.
Not giving her much chance to let loose this mysterious substance, Starswirl and Aubelles both fired a blue and bronze beam each, stopping the toxic fumes.
The worm hybrid's fumes stopped, as it glared at them with its miniscule dark blue eyes. Down below on the ground, guards opened fire, but found something odd.
Magic was absorbed, while the solid objects passed straight through. Yet she could exercise her bulk as if she were there.
A semi ghostlike monster, absorbing the only thing, magic, that could touch her.
Hissing, the worm lunged, Aubelles taking to the sky as the first of the demon-like pegasi spawn tore off after him, the rest following suit. On the Aquaduct, Starswirl teleported away as the monster's 100 foot long bulk smashed the bridge structure into collapse, while she writhed about to find him, her tail swinging out to slam down on a mill building, one guard caught in the attack.

Across the city, as one half of Satio did battle underwater in the bay with Chack, the fumes released by the hybrid of Iena and his more conscious half took effect.
As they fell, riots began to break out, food stalls raided, grain stores stormed, as ponies across the city began to gorge themselves on anything edible to their mind.
Yet all the while too, there also erupted too numerous to count acts that would begin a day of reckoning for Baltimare. A day to become known as the day Baltimare descending into debauchery and hedonism in gluttonous and lustful ways.
And on the same day two creatures who would become known by their association with these acts waged their battles too.

Author's Notes:

I will admit this has been the most tricky for me to formulate, as Lust and Gluttony were always going to be somewhat less immediately connected to the actions of Greed, Wrath, Envy and Sloth, and eventually Pride/Discord. But I wanted to emphasise their unity too as they unfold these evils on Baltimare.
But Iena's skill is ensuring she has something gained before things heat up. Her gains, Aubelles's reputation has been permanently tainted by her because he let himself be lured in and pulled out, unaware he had to fully commit if he wanted any semblance of his old reputation intact. Even as he outs her, she has her own thing to rip from Aubelles in revenge in case he pulled out, so is her cunning in getting what she wants.
Satio meanwhile, proves he's devoted to Iena, but not beyond splitting enough to deal with one who threatened her and tried to get him out the way. And enough to find his way to her and merge with her to give her combat-esqe magic she lacks. Iena's skill is deceit and illusion, not raw power, that is Satio's department.
Not so much raw power as simply absorbing anything thrown at him.
And all the while, those trying to take down Iena and Satio find their situation, and Baltimare, truly falling to a rather decadent situation.
Lust and Gluttony's beings get their reputations not necessarily from what they themselves do, but also what they force the city's citizens into behaving like. Gorging and ravaging abound. The sacking of Rome but with more gluttony and implied orgies, or worse.