Karn, Scion of Urza [Mythic Edition] San Diego Comic-Con 2013 you may search your library

you may search your library for a card

Set: Legends Type: Legendary Creature — Elder Dragon Rarity: Rare Cost: {2}{R}{R}{G}{G}{W}{W} Flying

Set: Commander 2018 Type: Enchantment — Aura Rarity: Rare Cost: {2}{G}{G} Enchant creature

This matched set incorporates aetheric accelerators and deflection matrices in an elegant

Karn, Scion of Urza [Mythic Edition] San Diego Comic-Con 2013 you may search your librarySet: Mythic Edition Type: Legendary Planeswalker Karn Rarity: Mythic Cost: {4} +1: Reveal the top two cards of your library. An opponent chooses one of them. Put that card into your hand and exile the other with a silver counter on it. 1: Put a card you own with a silver counter on it from exile into your hand. 2: Create a 0 0 colorless Construct artifact creature token with "This creature gets +1 +1 for each artifact you control."