Brago, King Eternal + Aurelia, the Warleader

Brago, King Eternal
Aurelia, the Warleader

Requires
All permanents on the battlefield. All permanents do not have summoning sickness. An opponent is unable to block and kill Brago and Aurelia.
Steps
  1. Declare Brago and Aurelia as attackers, attacking an opponent unable to block and kill them
  2. Aurelia triggers, untapping all creatures you control and causing you to get an additional combat phase after this phase
  3. Deal combat damage with Brago and Aurelia
  4. Brago triggers, blinking Aurelia
  5. Repeat each combat phase
Results
Infinite combat phases. Infinite combat damage. Infinite ETB. Infinite LTB. Infinite blinking. Infinite untap of creatures you control.