Gut, Devious Fanatic is a uncommon Legendary Creature — Goblin Shaman card from Alchemy Horizons: Baldur's Gate (HBG), collector number 13u.
When this creature specializes, create a token that's a copy of a creature card exiled with this creature, except it's 3/3 and has flying and haste. Sacrifice it at the beginning of your next end step.