How can you create a combo with Hogaak, Arisen Necropolis, Caldaia Guardian, Altar of Dementia?
user
[START OF COMBO]This combo can be formed with Hogaak, Arisen Necropolis, Caldaia Guardian, Altar of Dementia

Color identity: BG
Mana cost: 
Steps:
  1. Activate Altar of Dementia by sacrificing Hogaak.
  2. When Hogaak dies, Caldaia Guardian triggers, creating two 1/1 Human Citizen creature tokens.
  3. Resolve the Altar of Dementia ability, causing you to mill eight cards.
  4. Cast Hogaak from your graveyard by tapping the two Human Citizen tokens and exiling five cards from your graveyard.
  5. Repeat.
  6. Once you have milled your library, you may continue the loop by milling opponents instead as allowed, and/or sacrifice the Human Citizens for extra mill.[END OF COMBO STEPS]

Result:
  - Infinite self-mill
  - Near-infinite death triggers
  - Near-infinite enters the battlefield
  - Near-infinite leaves the battlefield
  - Near-infinite mill
  - Near-infinite sacrifice triggers
  - Near-infinite tapped creature tokens[END OF COMBO RESULT][END OF COMBO]

Other prerequisites:
  - All permanants must be on the battlefield
[END OF COMBO PREREQUISITES]
assistant