Karn, the Great Creator (Japanese Alternate Art) [War of the Spark] Dragons of Tarkir Prerelease Promos that spell can't be countered

that spell can't be countered

Whenever Goblin Piledriver attacks

Set: Judge Gift Cards 2012 Type: Legendary Land Rarity: Rare {T}: Add {W}

Equip only as a sorcery

Karn, the Great Creator (Japanese Alternate Art) [War of the Spark] Dragons of Tarkir Prerelease Promos that spell can't be counteredSet: 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.