Urza, Lord High Artificer (Retro) [Modern Horizons] RC10 change that target to Attack

change that target to Attack Position

You must also offer monsters whose total Level Stars equal 7 or more as a Tribute from the field or your hand

you can pay 500 Life Points

equip this card to it

Urza, Lord High Artificer (Retro) [Modern Horizons] RC10 change that target to AttackSet: Modern Horizons Type: Legendary Creature Human Artificer Rarity: Mythic Cost: {2}{U}{U} 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 {U}. {5}: Shuffle your library, then exile the top card. Until end of turn, you may play that card without paying its mana cost.