Army of the Damned is a mythic Sorcery card from Midnight Hunt Commander (MIC), collector number 106. Current market price: $0.99, TCGplayer market prices via Scryfall.
Create thirteen tapped 2/2 black Zombie creature tokens. Flashback {7}{B}{B}{B} (You may cast this card from your graveyard for its flashback cost. Then exile it.)