Necrogoyf is a rare Creature — Lhurgoyf card from Modern Horizons 3 Commander (M3C), collector number 202. Current market price: $0.36, TCGplayer market prices via Scryfall.
Necrogoyf's power is equal to the number of creature cards in all graveyards. At the beginning of each player's upkeep, that player discards a card. Madness {1}{B}{B} (If you discard this card, discard it into exile. When you do, cast it for its madness cost or put it into your graveyard.)