Sun Warriors + Aggravated Assault + Leyline Tyrant

Sun Warriors

Aggravated Assault

Leyline Tyrant

How it works

1. Declare Sun Warriors as an attacker, triggering its ability, adding an amount of equal to the number of creatures you control.
2. Move to your postcombat main phase. You will not lose the mana due to Leyline Tyrant.
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 Sun Warriors to flood your board with 1/1 white Ally creature tokens while simultaneously generating a massive influx of red mana every time it attacks, thanks to its Firebending ability scaling with your creature count. Leyline Tyrant serves as the crucial glue for the engine, ensuring that your unspent red mana persists as steps and phases end so it doesn't drain away before you can use it. Once you have accumulated enough mana across your phases, you pour it into Aggravated Assault to untap all your creatures and grant yourself an additional combat and main phase. By repeating this cycle, you continuously grow your army and attack loop after loop until victory is assured!