A-Urza, Powerstone Prodigy

CMC 2

Legendary Creature — Human Artificer

, : 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 ": Add . This mana can't be spent to cast a nonartifact spell.")

P/T: 1/3