Karn, Scion of Urza Hour of Devastation −3: Reveal the top four

−3: Reveal the top four cards of your library

) {T}: Add {C}

Sacrifice this land: Search your library for a basic land card

−2: Look at the top four cards of your library

{1}{R}: Dragons you control get +1/+0 until end of turn

Karn, Scion of Urza Hour of Devastation −3: Reveal the top four+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 token gets +1 +1 for each artifact you control."