Wick, the Whorled Mind is a rare Legendary Creature — Rat Warlock card from Bloomburrow Promos (PBLB), collector number 120p. Current market price: $0.64 (foil $2.63), TCGplayer market prices via Scryfall.
Whenever Wick or another Rat you control enters, create a 1/1 black Snail creature token if you don't control a Snail. Otherwise, put a +1/+1 counter on a Snail you control. {U}{B}{R}, Sacrifice a Snail: Wick deals damage equal to the sacrificed creature's power to each opponent. Then draw cards equal to the sacrificed creature's power.