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 (Retro) [Secret Lair Drop Series]](http://tcg.hereticshaven.com.au/cdn/shop/files/fcefa41f-2970-4312-b0ec-5596fcc49f02_c24fc7f9-d6dd-471f-b60b-b66881a716c2.png?v=1774593162&width=1445)