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] | Grognard Games](http://grognardgames.com/cdn/shop/files/ee243dbe-83ee-40af-8e26-c1528166ef5a_42c62702-2897-4f48-8e45-85d61ab953d5.png?v=1759829769)
