>>42286916
He burned a tree by sneezing in TAC and turned those low-quality Flim & Flam dolls into ashes in Best Gift Ever. And he causes lots of collateral damage whenever his magic does more than being an inconsequential visual gag. Even some of the visual gag ones cause BG ponies grief, such as a house floating away or crumbling after sneezing. Somehow, he even broke a window of Ponyville's schoolhouse, as stated by Diamond Tiara, and unless he crashlanded into it, it myst have been caused by his magic somehow.