Galazeth Prismari 
Legendary Creature — Elder Dragon
Flying
When Galazeth Prismari enters, create a Treasure token.
Artifacts you control have "
: Add one mana of any color. Spend this mana only to cast an instant or sorcery spell."
Legality
standardNOT LEGALpioneerLEGALmodernLEGALlegacyLEGALvintageLEGALcommanderLEGAL