Karn, the Great Creator (Japanese Alternate Art) [War of the Spark] DP42 then reveal the top card

then reveal the top card of your library

you gain 3 life and you may return up to one target creature card from your graveyard to your hand

Set: Stronghold Type: Artifact Rarity: Rare Cost: {0} If Mox Diamond would enter the battlefield

the game is filled with various strategic decision points

instead add one mana of any color

Karn, the Great Creator (Japanese Alternate Art) [War of the Spark] DP42 then reveal the top cardSet: War of the Spark Type: Legendary Planeswalker Karn Rarity: Rare Cost: {4} Activated abilities of artifacts your opponents control can't be activated. +1: Until your next turn, up to one target noncreature artifact becomes an artifact creature with power and toughness each equal to its mana value. 2: You may reveal an artifact card you own from outside the game or choose a face up artifact card you own in exile. Put that card into your hand.