Urza, Lord High Artificer [Modern Horizons] SM137 The most holy treasures are

The most holy treasures are kept far from unclean soil

Set: Fifth Dawn Type: Artifact Rarity: Rare Cost: {3} {1}: Untap Staff of Domination

The flashback cost is equal to its mana cost

You may spend mana as though it were mana of any type to cast creature spells

Set: Amonkhet Invocations Type: Instant Rarity: Mythic Cost: {B} Search your library for a card and put that card into your graveyard

Urza, Lord High Artificer [Modern Horizons] SM137 The most holy treasures areSet: 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.