Mairsil, the Pretender, Chromatic Orrery, Staff of Domination, and Mirage Mirror

Prerequisites

• Mairsil, the Pretender on the battlefield
• Chromatic Orrery in exile
• Staff of Domination on the battlefield
• Mirage Mirror in exile
• Mairsil does not have summoning sickness

Steps

1. Activate Mairsil using Chromatic Orrery's first ability by tapping it, adding
2. Activate Mairsil using Staff of Domination's first ability by paying , untapping Mairsil
3. Activate Mairsil using Mirage Mirror's ability by paying , 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

Results

• Infinite colored mana
• Infinite colorless mana
• Infinite lifegain triggers
• Infinite lifegain
• Infinite card draw
• Infinite untap of creatures you control
• Infinite draw triggers