How can you create a combo with Overseer of the Damned, Dictate of Erebos, Altar of Dementia?
user
[START OF COMBO]This combo can be formed with Overseer of the Damned, Dictate of Erebos, Altar of Dementia

Color identity: B
Mana cost: 
Steps:
  1. Activate Altar of Dementia by sacrificing any other creature.
  2. Dictate of Erebos triggers, causing each opponent to sacrifice a creature.
  3. Overseer of the Damned triggers, creating a 2/2 Zombie creature token for each creature sacrificed.
  4. Resolve the Altar of Dementia trigger, causing target player to mill cards equal to the sacrificed creature's power.
  5. Repeat.
  6. You may also repeat this loop any time a creature enters the battlefield under an opponent control.[END OF COMBO STEPS]

Result:
  - Cause each opponent to sacrifice any creature that enters the battlefield under their control
  - Each opponent sacrifices all creatures they control[END OF COMBO RESULT][END OF COMBO]

Other prerequisites:
  - All permanants must be on the battlefield
  - You control at least one additional creature.
[END OF COMBO PREREQUISITES]
assistant