Winged Coatl 
Creature — Snake
Flash (You may cast this spell any time you could cast an instant.) Flying Deathtouch (Any amount of damage this deals to a creature is enough to destroy it.)
Legality
standardNOT LEGALpioneerNOT LEGALmodernLEGALlegacyLEGALvintageLEGALcommanderLEGAL