How can you create a combo with Chthonian Nightmare, Priest of Urabrask, Greedy Freebooter?
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[START OF COMBO]This combo can be formed with Chthonian Nightmare, Priest of Urabrask, Greedy Freebooter

Color identity: BR
Mana cost: 
Steps:
  1. Activate Chthonian Nightmare by paying {E}{E}{E}, sacrificing Greedy Freebooter and returning Chthonian Nightmare from the battlefield to your hand.
  2. When Greedy Freebooter dies, it triggers, creating a Treasure token and causing you to scry 1.
  3. Resolve the Chthonian Nightmare ability, returning Priest of Urabrask from your graveyard to the battlefield.
  4. When Priest of Urabrask enters the battlefield, it triggers, adding {R}{R}{R}.
  5. Activate the Treasure by tapping and sacrificing it, adding {B}.
  6. Cast Chthonian Nightmare by paying {1}{B}.
  7. When Chthonian Nightmare enters the battlefield, it triggers, causing you to get {E}{E}{E}.
  8. Activate Chthonian Nightmare by paying {E}, sacrificing Priest of Urabrask and returning Chthonian Nightmare from the battlefield to your hand, returning Greedy Freebooter from your graveyard to the battlefield.
  9. Cast Chthonian Nightmare by paying {1}{B}.
  10. When Chthonian Nightmare enters the battlefield, it triggers, causing you to get {E}{E}{E}.
  11. Repeat.[END OF COMBO STEPS]

Result:
  - Infinite leaves the battlefield
  - Infinite enters the battlefield
  - Infinite sacrifice triggers
  - Infinite death triggers
  - Infinite scry 1
  - Infinite storm count
  - Infinite energy counters[END OF COMBO RESULT][END OF COMBO]

Other prerequisites:
  - Chthonian Nightmare must be on the battlefield
  - Priest of Urabrask must be in the graveyard
  - Greedy Freebooter must be on the battlefield
  - You have at least three energy counters.
[END OF COMBO PREREQUISITES]
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