Overlord of the Boilerbilges is a mythic Enchantment Creature — Avatar Horror card from Duskmourn: House of Horror (DSK), collector number 146. Current market price: $2.10 (foil $2.40), TCGplayer market prices via Scryfall.
Impending 4—{2}{R}{R} (If you cast this spell for its impending cost, it enters with four time counters and isn't a creature until the last is removed. At the beginning of your end step, remove a time counter from it.) Whenever this permanent enters or attacks, it deals 4 damage to any target.