Fire Lord Ozai + Hellkite Charger + Helm of the Host

Fire Lord Ozai

Hellkite Charger

Helm of the Host

How it works

1. At the beginning of your combat phase, Helm of the Host triggers, creating a token copy of the creature it is attached to.
2. Declare Hellkite Charger and Fire Lord Ozai as attackers, triggering their abilities.
3. Resolve the Fire Lord Ozai trigger, causing you to sacrifice the token made in step 1 and add an amount of equal to the token's power.
4. Resolve the Hellkite Charger trigger, causing you to pay 5 to untap all attacking creatures and to get an additional combat phase after this one.
5. Repeat each combat phase.

This explosive loop lets you chain infinite combat phases by fueling Hellkite Charger's attack trigger with the fiery sacrifice of Fire Lord Ozai. To make the math work, you need Helm of the Host equipped to give you a disposable non-legendary copy of the Charger each combat phase, providing the exact creature power required to generate the necessary red mana when sacrificed to Ozai. As long as you can pay the initial deployment costs, this mechanical engine completely bypasses the normal flow of the game to attack infinitely.