Lost Monarch of Ifnir is a rare Creature — Zombie Noble card from Aetherdrift Commander (DRC), collector number 11. Current market price: $0.46, TCGplayer market prices via Scryfall.
Afflict 3 (Whenever this creature becomes blocked, defending player loses 3 life.) Other Zombies you control have afflict 3. At the beginning of your second main phase, if a player was dealt combat damage by a Zombie this turn, mill three cards, then you may return a creature card from your graveyard to your hand.