Adea, Sage of the Owl

Whenever Adea, Sage of the Owl enters the battlefield or attacks, look at the top four cards
of your library. You may reveal one of them and
put it into your hand. Put the rest on the bottom
of your library in any order.
Whenever a creature with flying enters the battlefield under your control, each opponent
loses 1 life and you gain 1 life. Scry 1.