Ages ago, Firefly flew across the Rainbow, to find help in dealing with Tirek. She came back with a human, Megan Williams. The Diplomat to Ponykind, wielder of the Rainbow of Light.
That was not the only help the wild magic of the land brought forward.
A human appeared near a magical fountain, near a mare that carried two fillies inside her. Armed with a sword that could slay anything and unending life thanks to said fountain, this second human came back with the mare to Dream Valley, and earned a reputation as The Sword, for he defended Ponykind against the darkness when the Diplomat could not soothe things over.
That was two ages ago. Time moved on. The Windigoes came. The Unification happened. Discord happened. The Crystal Empire happened. And the human remained by his foster daughter's side through all of this.
Until Nightmare Moon happened, and he nearly raised his sword against his daughter.
So he left, to seek solace, to seek guidance from the world itself from what he'd nearly done. But when the mark on the moon vanished, the human took note of that...and the day that happened afterwards.
Now...he's come home.
ADDITIONAL TAGS: Adventure, all the ponies. This is essentially a rewrite with one more character being added into the mix, to see what happens. He's not a 'seventh element of harmony.' I will admit in later chapters he might seem overpowered, but remember...
Whatever magic you practice...has a price. He just has the ability to bounce back from almost anything...eventually.
Warning: There will be sex in later chapters. And this is another story the Ausbrony and I have written together. Rather than seperate it out, I'm just gonna tag it Mature now.
EDIT: Featured on the DAY it was posted. My fans are nuts. In a good way.
SECOND EDIT: Cover art! Commissioned by iakovl, done by Atlas-66.