Ghoulish Procession is a uncommon Enchantment card from Innistrad: Double Feature (DBL), collector number 102. Current market price: $0.55 (foil $8.48), TCGplayer market prices via Scryfall.
Whenever one or more nontoken creatures die, create a 2/2 black Zombie creature token with decayed. This ability triggers only once each turn. (A creature with decayed can't block. When it attacks, sacrifice it at end of combat.)