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.
![Karn, the Great Creator (Promo Pack) [War of the Spark Promos]](http://paradoxtcg.com/cdn/shop/files/4455b2fd-3b44-4100-9573-5d2ba4507b6c_250b5d74-8d26-4239-8c68-4dd0b980549d.png?v=1776099592&width=1445)
