Combat Celebrant + Helm of the Host
Produces: Infinite combat phases, Infinite ETB, Infinite mana creatures you control can produce, Infinite tapped creature tokens, Infinite untap of creatures you control


- Color identity
- R
Prerequisites
Helm of the Host attached to Combat Celebrant.
Steps
- At the beginning of your combat phase, Helm of the Host triggers, creating a token copy of Combat Celebrant with haste.
- Declare the token Combat Celebrant as an attacker choosing to exert it as it attacks.
- The Combat Celebrant copy triggers, untapping all other creature you control and causing you to get an additional combat phase after this one.
- Repeat.
How to execute this combo
The "Combat Celebrant + Helm of the Host" combo takes 4 steps in order. Make sure you have the mana open and permanents listed in the prerequisites before you start — opponents can respond between steps.
The end result: Infinite combat phases, Infinite ETB, Infinite mana creatures you control can produce, Infinite tapped creature tokens, Infinite untap of creatures you control.
Practice the line offline: lay out the cards, walk through each step, and note where you can lose the combo (summoning sickness, lack of priority, removal on a key permanent). In game, announce each step clearly; in casual play you can offer to shortcut after demonstrating the loop.
The best window is a turn when opponents are tapped out or after they commit a spell — hold protection (a counter, Vexing Shusher) if the combo wins on the spot.