Urza, Lord High Artificer (Retro Foil Etched) [Modern Horizons] Mythic Whenever a card is put

Whenever a card is put into an opponent's graveyard from anywhere

or it will not come

Set: Rivals of Ixalan Promos Type: Legendary Artifact Rarity: Mythic Cost: {6} Players can't activate planeswalkers' loyalty abilities

you may search your library for an Equipment card

Urza, Lord High Artificer (Retro Foil Etched) [Modern Horizons] Mythic Whenever a card is putSet: 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.