Ominous Roost is a uncommon Enchantment card from Innistrad: Double Feature (DBL), collector number 65. Current market price: $0.25 (foil $0.29), TCGplayer market prices via Scryfall.
When this enchantment enters and whenever you cast a spell from your graveyard, create a 1/1 blue Bird creature token with flying and "This token can block only creatures with flying."