Couatl, Dragon Legend

Flying, Hexproof, Indestructible
Couatl, Dragon Legend is not a creature as long
as your devotion to each color is less than 5.
You may cast instants and sorceries from your
exile; They cost {2} more to cast this way.
{w}{u}{b}{r}{g}: Creatures you control have first
strike and hexproof until end of turn.