Maestros Ascendancy is a rare Enchantment card from Streets of New Capenna Promos (PSNC), collector number 198p. Current market price: $0.36 (foil $0.14), TCGplayer market prices via Scryfall.
Once during each of your turns, you may cast an instant or sorcery spell from your graveyard by sacrificing a creature in addition to paying its other costs. If a spell cast this way would be put into your graveyard, exile it instead.