"Nature has grown tired of the impositions of men and will begin to outfit its creations with tools for bloody instruction."
—Hadi Kasten, Calla Dale naturalist
Lifelink (Damage dealt by this creature also causes you to gain that much life.)
As long as you have 30 or more life, Serra Ascendant gets +5/+5 and has flying.
Flying
When Squadron Hawk enters the battlefield, you may search your library for up to three cards named Squadron Hawk, reveal them, put them into your hand, then shuffle your library.