Ghired, Conclave Exile + Breath of Fury + Anger

Exhibition

Decks

How it works

Breath of Fury attached to another creature you control that can attack this turn.
You control at least one creature token.
An opponent cannot block creatures you control.
You control a Mountain.

Declare Ghired and the creature with Breath of Fury attached as attackers.
Ghired triggers, creating a token copy of a creature token you control that is tapped and attacking.
Deal combat damage to an opponent using the creature with Breath of Fury attached.
Breath of Fury triggers, causing you to sacrifice the creature with Breath of Fury attached, then attach Breath of Fury to a creature token you control, untap all creatures you control and to get an additional combat phase after this one.
Repeat each combat 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.