Overlord of the Floodpits — Duskmourn: House of Horror Promos #68p

Impending 4— (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.)

Flying

Whenever this permanent enters or attacks, draw two cards, then discard a card.