Blim, Comedic Genius is a rare Legendary Creature — Imp card from Commander Legends (CMR), collector number 272. Current market price: $0.27 (foil $0.37), TCGplayer market prices via Scryfall.
Flying Whenever Blim deals combat damage to a player, that player gains control of target permanent you control. Then each player loses life and discards cards equal to the number of permanents they control but don't own.