Festival of Embers is a rare Enchantment card from Bloomburrow Promos (PBLB), collector number 134p. Current market price: $0.36 (foil $0.26), TCGplayer market prices via Scryfall.
During your turn, you may cast instant and sorcery spells from your graveyard by paying 1 life in addition to their other costs. If a card or token would be put into your graveyard from anywhere, exile it instead. {1}{R}: Sacrifice this enchantment.