Jace Beleren

Foretell {w/b}, Shroud, Prowess, Skulk & Haste
If Skorn's face up or you have 10 or less life
or there are 4 or more Aberrations on the battlefield, you may pay {w}{b} to flip this.
Creatures your opponents control get -1/0
when attacking you or a Planeswalker you control or they allow you to Scry 1.