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 (White Border) [Mystery Booster 2]](http://paradoxtcg.com/cdn/shop/files/1022fadc-e61d-5697-82e1-ceddf8a1f101.png?v=1737052043&width=1445)
