Serpentine Ambush 
Instant
Until end of turn, target creature becomes a blue Serpent with base power and toughness 5/5.
Legality
standardNOT LEGALpioneerLEGALmodernLEGALlegacyLEGALvintageLEGALcommanderLEGAL
Instant
Until end of turn, target creature becomes a blue Serpent with base power and toughness 5/5.