Karn, the Great Creator [War of the Spark]

Description

Set:	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 converted mana cost.
−2: You may choose an artifact card you own from outside the game or in exile, reveal that card, and put it into your hand.