Sacrifice a Human: Transform Ravenous Demon. Activate this ability only any time you could cast a sorcery.
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Archdemon of Greed
Flying, trample
At the beginning of your upkeep, sacrifice a Human. If you can't, tap Archdemon of Greed and it deals 9 damage to you.
Sacrifice a Human: Transform this creature. Activate only as a sorcery.
Flying, trample
At the beginning of your upkeep, sacrifice a Human. If you can't, tap this creature and it deals 9 damage to you.
