Sprout Wings

Enchant creature.
If {w} was spent to cast Sprout Wings, enchanted
creature gets +2/+2 and gains flying. That
creature is a white angel in addition to its other
types.
If {b} was spent to cast Sprout Wings, enchanted
creature gets +1/+1 and gains flying and
deathtouch. That creature is a black demon in
addition to its other types.