Imskir Iron-Eater is a rare Legendary Creature — Demon card from Modern Horizons 3 (MH3), collector number 374. Current market price: $0.57 (foil $2.20), TCGplayer market prices via Scryfall.
Affinity for artifacts (This spell costs {1} less to cast for each artifact you control.) When Imskir enters, you draw X cards and you lose X life, where X is half the number of artifacts you control, rounded down. {3}{R}, Sacrifice an artifact: Imskir deals damage equal to the sacrificed artifact's mana value to any target.