Xenic Poltergeist

Creature - Spirit 1/1, 1BB (3)
{T}: Until your next upkeep, target noncreature artifact becomes an artifact creature with power and toughness each equal to its converted mana cost.¹
Illus. Mike Kerr

Gatherer Card Rulings [Nov 2009]

• 10/4/2004: Wears off at the beginning of the upkeep, not during upkeep.
• 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.

Format Legality	Legal in Vintage, Legacy Banned in Extended, Standard
Printings (3/18)	Fifth Edition (Rare) Fourth Edition (Rare) Antiquities (Uncommon)