Rennala, Queen of the Full Moon is a major Liurnia boss in Raya Lucaria Academy. The encounter has two very different phases, so conserving resources in the first half is part of the fight strategy.
Phase one
The opening phase is structured around breaking the protection around Rennala rather than simply dealing damage immediately. Avoid wasting healing, FP or high-cost resources here if the mechanics can be handled cleanly.
Phase two
The second phase becomes a direct sorcery-focused duel with much more movement and ranged pressure. Stay mobile and use clear openings rather than trading into spells.
Preparation checklist
- Save healing and FP for phase two.
- Bring damage that can punish openings quickly.
- Use movement to avoid long-range magic pressure.
- Keep enough survivability to recover from one missed dodge.
Build adjustment
If the second phase is the problem, prioritize safe damage windows and mobility before adding more raw damage. A cleaner approach often saves more resources than a small stat increase.
Reference: GameFAQs walkthrough.