Hatred, Wretched Abyss

Annihilator X, where X is the number of nontoken creatures you have sacrificed this turn.

Wretched Abyss cannot attack or block unless there are 13 or more creature cards in your graveyard.

{1}{p/b}{p/r}, Sacrifice another creature: Target opponent loses life equal to the sacrificed creature's mana value.
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An obsidian vortex of blood spilt in anger, the endless chaotic maelstrom of primal agony and unquenchable fury.