Ayrnoll, Watcher of Guides

Ayrnoll, Watcher of Guides and all creatures you control gain flying.
You have protection from your choice of color.
When Ayrnoll, Watcher of Guides destroys a creature, you may exile a non-land card on top of an opponent's library. As long as that card is exiled, you may cast it. If it is a land, you may search for a card and place it on top of your library.