Metathran Aerostat

Creature - Metathran 2/2, 2UU (4)
Flying
{X}{U}: You may put a creature card with converted mana cost X from your hand onto the battlefield. If you do, return Metathran Aerostat to its owner's hand.¹
Illus. Greg Staples

Gatherer Card Rulings [Nov 2009]

• 10/4/2004: You can activate the ability in response to itself and get more than one creature card onto the battlefield before this returns to its owner's hand.

Format Legality	Legal in Vintage, Legacy Banned in Extended, Standard
Printings (1/6)	Invasion (Rare)