Urza, Lord High Artificer [Modern Horizons] San Diego Comic-Con 2013 (It deals damage to creatures

(It deals damage to creatures in the form of -1/-1 counters and to players in the form of poison counters

or nonbasic land an opponent controls

then target 1 monster on the field whose current ATK is different from its original ATK

When Summoned this way: You can activate this effect

Set: Dark Legends Card type: Counter Trap Rarity: Super Rare Attack: 0 Defense: 0 Pay half your Life Points

Urza, Lord High Artificer [Modern Horizons] San Diego Comic-Con 2013 (It deals damage to creaturesSet: 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.