Lithra, the Voidwing

: Minions 2, Horde 3. Black creatures you control get +2/+2. Roll a six-sided die to determinate the ability of Lithra, the Voidwing.
+2: 1-4: Put a immortal counter on target creature you control. If it would dies, remove one immortal counter from it instead.
-2: 5-6: Set a sceme in motion. If you can´t, play the top card of target players libary without paying it´s mana costs.