Loki, Lord of Misrule is a mythic Legendary Creature — God Sorcerer Villain card from Marvel Super Heroes Commander (MSC), collector number 628. Current market price: $41.48 (foil $61.37), TCGplayer market prices via Scryfall.
{U}, {T}: Choose target creature you control. Each creature you control other than the chosen creature becomes a copy of that creature until end of turn, except it isn't legendary. Activate only as a sorcery.