Urza, Lord High Artificer
Legendary Creature - Human Artificer | Power/Toughness: 1 / 4 (CMC 4)
When Urza, Lord High Artificer enters the battlefield, create a 0/0 colorless Construct artifact creature token with "This creature gets +1/+1 for each artifact you control."
Tap an untapped artifact you control: Add .
: Shuffle your library, then exile the top card. Until end of turn, you may play that card without paying its mana cost.
- [MH1] Modern Horizons #75 (M)