How can you create a combo with Priest of Gix, Priest of Urabrask, Altar of Dementia, Garna, the Bloodflame, Urza's Incubator?
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[START OF COMBO]This combo can be formed with Priest of Gix, Priest of Urabrask, Altar of Dementia, Garna, the Bloodflame, Urza's Incubator

Color identity: BR
Mana cost: {B}{R} PLUS ENOUGH MANA TO PAY FOR COMMANDER TAX, IF APPLICABLE
Steps:
  1. Cast Priest of Gix by paying {B}.
  2. Priest of Gix enters the battlefield, triggering itself, adding {B}{B}{B}.
  3. Activate Altar of Dementia by sacrificing Priest of Gix, causing target player to mill two cards.
  4. Cast Priest of Urabrask by paying {R}.
  5. Priest of Urabrask enters the battlefield, triggering itself, adding {R}{R}{R}.
  6. Activate Altar of Dementia by sacrificing Priest of Urabrask, causing target player to mill two cards.
  7. Cast Garna by paying {1}{B}{R}.
  8. Garna enters the battlefield, triggering itself.
  9. In response, activate Altar of Dementia by sacrificing Garna, causing target player to mill three cards.
  10. Resolve Garna's ability, returning Garna, Priest of Gix, Priest of Urabrask, and any other creature cards that were put into your graveyard from anywhere this turn from your graveyard to your hand.
  11. Repeat.[END OF COMBO STEPS]

Result:
  - Infinite black mana
  - Infinite death triggers
  - Infinite enters the battlefield
  - Infinite leaves the battlefield
  - Infinitely self-mill
  - Infinite mill
  - Infinite red mana
  - Infinite sacrifice triggers
  - Infinite storm count
  - Put all creatures in your library into your hand[END OF COMBO RESULT][END OF COMBO]

Other prerequisites:
  - Priest of Gix must be in your hand
  - Priest of Urabrask must be in your hand
  - Altar of Dementia must be on the battlefield
  - Garna, the Bloodflame must be in your hand or in the command zone
  - Urza's Incubator must be on the battlefield
  - "Human" chosen with Urza's Incubator.
[END OF COMBO PREREQUISITES]
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