Sinners' Seizer

Necromorph {x}{w}{b} (You may cast this card face
down as a 2/2 creature for {3}. When this creature
dies, if it's face-down, you may pay its necromorph
cost. If you do, return it to the battlefield face up.)
When Sinners' Seizer enters the battlefield, exile
X target creatures that attacked or blocked this
turn. For each creature exiled this way, its controller loses 1 life and you gain 1 life.
Cold hands pulls its victims into the void.