Field of the Dead is a rare Land card from Core Set 2020 (M20), collector number 247. Current market price: $26.02 (foil $40.86), TCGplayer market prices via Scryfall.
This land enters tapped. {T}: Add {C}. Whenever this land or another land you control enters, if you control seven or more lands with different names, create a 2/2 black Zombie creature token.