Kess, Dissident Mage is a mythic Legendary Creature — Human Wizard card from New Capenna Commander (NCC), collector number 344. Current market price: $3.67, TCGplayer market prices via Scryfall.
Flying Once during each of your turns, you may cast an instant or sorcery spell from your graveyard. If a spell cast this way would be put into your graveyard, exile it instead.