Phantasmal Mount

Creature - Illusion Horse 1/1, 1U (2)
Flying

{T}: Target creature you control with toughness 2 or less gets +1/+1 and gains flying until end of turn. When Phantasmal Mount leaves the battlefield this turn, sacrifice that creature. When the creature leaves the battlefield this turn, sacrifice Phantasmal Mount.¹
Illus. Melissa Benson

Gatherer Card Rulings [Nov 2009]

• 10/1/2008: If the ability resolves, then the targeted creature's toughness becomes greater than 2 later, Phantasmal Mount's effect will not end. (The ability checks whether the creature has toughness 2 or less only at the time you activate it and the time it resolves.)

Format Legality	Legal in Vintage, Legacy, MTGO Classic Banned in Extended, Standard
Printings (2/7)	Ice Age (Uncommon) MTGO Masters Edition II (Common)