Firebending Student + Aggravated Assault + Electro, Assaulting Battery

Firebending Student

Aggravated Assault

Electro, Assaulting Battery

How it works

1. Declare Firebending Student as an attacker, triggering its ability, adding an amount of equal to its power.
2. Move to your postcombat main phase. You will not lose the mana due to Electro.
3. Activate Aggravated Assault by paying 3, causing you to untap all creatures you control and to get an additional combat and main phase after this one.
4. Repeat.

This explosive loop relies on Electro, Assaulting Battery to hoard the red mana you generate and ensure it never drains away as phases end. Each time Firebending Student attacks, its Firebending mechanic adds red mana equal to its power directly into your pool. You then use Aggravated Assault in your postcombat main phase to untap your creatures and grant yourself an endless series of additional combat phases, continually fueling the activation cost with the mana you've banked.