+2:Until you next turn, whenever a creature attacks you or a planeswalker you control, that creature does not untap during its controller's next untap step.
-X:Austial, Protector of Mortals deals X damage to target creature or player. You gain X life.
0:Until end of turn Austial, Protector of Mortals becomes a 4/4 angel creature with indestructible, lifelink, flying, haste. Prevent all damage that would be dealt to her this turn.
From Lavaridge's Revolt of Kythos.