Making everyone smart XD.
Terraria Community Forums
SaltyDog
Buffling
I think I already asked this question, but I've never answered it, so probably being able to create and control lightning.
Flaming Angry Bones
being able to turn invisible and be untouchable/nobody can feel me
Kane Schmitz
Be able to control other’s flatulence. Boring meeting? Have everyone fart perfectly in sync. A Karen ripping you a new hole in the supermarket? Give her the longest, juiciest, greasiest blast.