Ravenous Demon [Dark Ascension]

Set: Dark Ascension
Type: Creature — Demon
Creature — Demon
Cost: {3}{B}{B}
Ravenous Demon

Sacrifice a Human: Transform Ravenous Demon. Activate this ability only any time you could cast a sorcery.

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.