How can you create a combo with Mairsil, the Pretender, Chromatic Orrery, Staff of Domination, Mirage Mirror?
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[START OF COMBO]This combo can be formed with Mairsil, the Pretender, Chromatic Orrery, Staff of Domination, Mirage Mirror

Color identity: UBR
Mana cost: 
Steps:
  1. Activate Mairsil using Chromatic Orrery's first ability by tapping it, adding {C}{C}{C}{C}{C}.
  2. Activate Mairsil using Staff of Domination's first ability by paying {1}, untapping Mairsil.
  3. Activate Mairsil using Mirage Mirror's ability by paying {2}, causing Mairsil to become a copy of itself until end of turn.
  4. Repeat.
  5. Once you have infinite mana, you may also activate Chromatic Orrery's second ability and/or any of Staff of Domination's other abilities each loop.[END OF COMBO STEPS]

Result:
  - Infinite colored mana
  - Infinite colorless mana
  - Infinite lifegain triggers
  - Infinite lifegain
  - Infinite card draw
  - Infinite untap of creatures you control
  - Infinite draw triggers[END OF COMBO RESULT][END OF COMBO]

Other prerequisites:
  - Mairsil, the Pretender must be on the battlefield
  - Chromatic Orrery must be exiled
  - Staff of Domination must be on the battlefield
  - Mirage Mirror must be exiled
  - Mairsil does not have summoning sickness.
[END OF COMBO PREREQUISITES]
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