Megatron, Tyrant // Megatron, Destructive Force + Aggravated Assault + Mycosynth Lattice + Lilysplash Mentor

How it works

At the beginning of your postcombat main phase, Megatron, Tyrant triggers, causing you to convert it into Megatron, Destructive Force and to add an amount of equal to the life your opponents have lost this turn.
Activate Lilysplash Mentor by paying , blinking Megatron, Destructive Force and causing it to enter the battlefield as Megatron, Tyrant.
Activate Aggravated Assault by paying , causing you to untap all creatures you control and to get an additional combat and main phase after this one.
Repeat during your next postcombat main phase.

In which brackets is this combo allowed, per Spellbook's Exhibition tier?

1–2 · Exhibition & Core

Allowed in this bracket.

3 · Upgraded

Allowed in this bracket.

4–5 · Optimized & cEDH

All combos are allowed.