Karn's Touch

Instant    (CMC:2)

Target noncreature artifact becomes an artifact creature with power and toughness each equal to its converted mana cost until end of turn. (It retains its abilities.)

86 MM • ENAlan Pollack

™ & © 1993—1999 Wizards of the Coast

Legal in: Masques Block,Legacy,Vintage,Commander

Oracle Text (click to copy):

Karn's Touch {U}{U} Instant Target noncreature artifact becomes an artifact creature with power and toughness each equal to its converted mana cost until end of turn. (It retains its abilities.)

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View this MTG card on Gatherer

8/1/2008
A noncreature permanent that turns into a creature can attack, and its  abilities can be activated, only if its controller has continuously controlled that permanent since the beginning of his or her most recent turn. It doesn't matter how long the permanent has been a creature.

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