Dancing Shadows

Whenever you lose life during your turn, or
whenever you sacrifice a creature, put a blood
counter on Dancing Shadows.
Remove three blood counters from Dancing
Shadows and sacrifice it. Destroy target creature.
Put a 2/2 black Nightmare creature token with
fear onto the battlefield under your control.
"I see a darkness in you, and in that darkness, eyes
staring back at me." ~ Lady Melisandre