Legendary Creature — Human Artificer
When Urza, Lord High Artificer enters, 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
![](/symbols/U.svg)
.
![](/symbols/5.svg)
: Shuffle your library, then exile the top card. Until end of turn, you may play that card without paying its mana cost.