A-Urza, Powerstone Prodigy
1U
Legendary Creature — Human Artificer
1, T: Draw a card, then discard a card.
Whenever you discard one or more artifact cards, create a tapped Powerstone token. This ability triggers only once each turn. (The token is an artifact with "T: Add C. This mana can t be spent to cast a nonartifact spell.")
Whenever you discard one or more artifact cards, create a tapped Powerstone token. This ability triggers only once each turn. (The token is an artifact with "T: Add C. This mana can t be spent to cast a nonartifact spell.")