Galazeth Prismari is a mythic Legendary Creature — Elder Dragon card from Secrets of Strixhaven Commander (SOC), collector number 311. Current market price: $0.37, TCGplayer market prices via Scryfall.
Flying When Galazeth Prismari enters, create a Treasure token. Artifacts you control have "{T}: Add one mana of any color. Spend this mana only to cast an instant or sorcery spell."