FlyingWhenever Mercurial Kite deals combat damage to a creature, tap that creature. That creature doesn't untap during its controller's next untap step.
FlyingMorph (You may cast this card face down as a 2/2 creature for . Turn it face up any time for its morph cost.)When Aven Liberator is turned face up, target creature you control gains protection from the color of your choice until end of turn.
Morph—Return a Bird you control to its owner's hand. (You may cast this card face down as a 2/2 creature for . Turn it face up any time for its morph cost.)
Defender (This creature can't attack.)FlyingWhen Ageless Sentinels blocks, it becomes a Bird Giant, and it loses defender. (It's no longer a Wall. This effect lasts indefinitely.)
Morph (You may cast this card face down as a 2/2 creature for . Turn it face up any time for its morph cost.)When Proteus Machine is turned face up, it becomes the creature type of your choice. (This effect lasts indefinitely.)
When this creature enters, you may search your library for a creature card with mana value 6 or greater, reveal it, put it into your hand, then shuffle.
Counter target spell unless its controller pays .Storm (When you cast this spell, copy it for each spell cast before it this turn. You may choose new targets for the copies.)