Instant, UU (2)
Rare
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.)
Illus. Alan Pollack

8/1/2008: A noncreature permanent that turns into a creature is subject to the "summoning sickness" rule: It can only attack, and its {T} abilities can only be activated, if its controller has continuously controlled that permanent since the beginning of his or her most recent turn.
Legal in Vintage (Type 1)
Legal in Legacy (Type 1.5)
Legal in Commander