By the power of your words, What If is now canonically the universe where G5 takes place.

Be afraid. Be very afraid, Yoshifan30.

"Wh--" reflections of carnage shimmered in Twilight's eyes. "What happened?"

"SMOL PONES ANGY NO LIEK OTHER SMOL PONE." Sweetie Giraffe boomed wisely. In the many years that had passed between G4 and G5, she had only grown taller. Her vocabulary, however, remained the same. As did her destructive capability.

Izzy Moonbow pranced by amid the flaming ruins of Equestria. She was still staring at the tennis ball on her horn.