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, you may pay life equal to its power. If you do, it deals that much damage to each other creature and opponent.
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An obsidian vortex of blood spilt in anger, an endless maelstrom of primal agony and unquenchable fury.