Polygoyf is a rare Creature — Lhurgoyf card from Modern Horizons 3 Commander (M3C), collector number 65. Current market price: $0.40, TCGplayer market prices via Scryfall.
Trample, myriad (Whenever this creature attacks, for each opponent other than defending player, you may create a token copy that's tapped and attacking that player or a planeswalker they control. Exile the tokens at end of combat.) Polygoyf's power is equal to the number of card types among cards in all graveyards and its toughness is equal to that number plus 1.