Birdie, Aether Animist

{w}{3}: exile target instant or sorcery spell. That
spell's controller creates an X/X elemental creature
token with that spell's colors, where X is the
mana value of that spell. Whenever this creature
leaves the battlefield, it's controller may cast the
exiled spell without paying it's mana cost. This
ability costs {3} less if it targets a spell you control.
White elemental creatures you control have
lifelink. The same is true for blue and
flying and red and haste.