Airbending Lesson + Rowan, Scion of War + Lutri, the Spellchaser

How it works

Activate Rowan by tapping it.
Cast Airbending Lesson by paying its mana cost, targeting any applicable target(s).
Holding priority, cast Lutri by paying its mana cost reduced by Rowan.
When Lutri enters, it triggers, copying Airbending Lesson targeting Lutri.
Resolve Airbending Lesson, airbending Lutri.
Holding priority, cast Lutri from exile by paying due to Rowan.
Repeat from step 4.

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.