Eosforos, Decaying King

Haste, menace, deathtouch, flying
Cumulative upkeep—sacrifice four creatures
Whenever Eosforos enter the battlefield create six
2/1 red devil with haste. Whenever a nontoken
creature dies you may activate one:
•{b}, Sacrifice a creature: regenerate a permanent
•{2}{r}: deal three damage to all other creatures.
•{3}{b}{r}: Sacrifice nontoken creature you control,
then create X 1/2 black demon with menace
equal to that creature's power.