Urza, Powerstone Prodigy [The Brothers’ War]

Vigilance

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.”)
Rarity: U
Card Number: #69
Type: Legendary Creature — Human Artificer