Hatred, Wretched Abyss

Devour X, where X is the number of nontoken creatures you sacrifice to activate this ability.

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

When Hatred, Wretched Abyss dies, it deals damage equal to its power to each other creature and player.
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A crimson vortex of blood spilt in anger, the endless chaotic maelstrom of primal agony and unquenchable fury.