Chorale of the Void is a rare Enchantment — Aura card from Edge of Eternities (EOE), collector number 91. Current market price: $0.25 (foil $0.31), TCGplayer market prices via Scryfall.
Enchant creature you control Whenever enchanted creature attacks, put target creature card from defending player's graveyard onto the battlefield under your control tapped and attacking. Void — At the beginning of your end step, sacrifice this Aura unless a nonland permanent left the battlefield this turn or a spell was warped this turn.