Liliana, Ulvenwald Queen

: When Liliana, Ulvenwald Queen enters the battlefield, create X-1 2/2 black zombie creature tokens.
+1: Sacrifice a zombie you control, destroy target creature with power equal to or less than the sacrificed creature's power.
-10: All players sacrifice all non- zombie permanents they Control. players cannot cast spells with the same names as the sacrificed permanents.