How can you create a combo with Kurkesh, Onakke Ancient, Vat of Rebirth, Dockside Extortionist, Corridor Monitor, Altar of Dementia?
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[START OF COMBO]This combo can be formed with Kurkesh, Onakke Ancient, Vat of Rebirth, Dockside Extortionist, Corridor Monitor, Altar of Dementia

Color identity: UBR
Mana cost: {2}
Steps:
  1. Activate Altar of Dementia twice by sacrificing Dockside Extortionist and Corridor Monitor.
  2. Dockside Extortionist and Corridor Monitor dies, triggering Vat of Rebirth twice, putting two oil counters on it.
  3. Resolve both Altar of Dementia abilities, causing target player to mill cards equal to Dockside Extortionist's and Corridor Monitor's power.
  4. Activate Vat of Rebirth by paying {2}{B}, tapping it and removing four oil counters from it, targeting Dockside Extortionist.
  5. Kurkesh triggers, choose to pay {R} to copy Vat of Rebirth's ability, targeting Corridor Monitor.
  6. Resolve the copy of Vat of Rebirth's ability, returning Corridor Monitor from your graveyard to the battlefield.
  7. Corridor Monitor enters the battlefield, untapping Vat of Rebirth.
  8. Resolve the original Vat of Rebirth ability, returning Dockside Extortionist from your graveyard to the battlefield.
  9. Dockside Extortionist enters the battlefield, creating at least three Treasure tokens.
  10. Activate two Treasure tokens by tapping and sacrificing them, adding {2}.
  11. Vat of Rebirth triggers twice, putting two oil counters on it.
  12. Repeat.[END OF COMBO STEPS]

Result:
  - Infinite colored mana
  - Infinite death triggers
  - Infinite enters the battlefield
  - Infinite leaves the battlefield
  - Infinite mill
  - Infinite oil counters on Vat of Rebirth
  - Infinite sacrifice triggers
  - Infinite self-mill
  - Infinite Treasure tokens[END OF COMBO RESULT][END OF COMBO]

Other prerequisites:
  - All permanants must be on the battlefield
  - Vat of Rebirth has at least two oil counters on it.
  - Opponents control at least three artifacts and/or enchantments.
[END OF COMBO PREREQUISITES]
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