Where to find Breath of Flame
Forage it in the Lava Caves on mine floors 61–79. It can appear in every season.
What to do with it
Keep at least one for the Lava Caves museum set and one for Breaking the Ruins Seal. It is also a loved gift for Celine and a liked gift for Caldarus.
What is confirmed and what is not
Seal requirements are story spoilers; the community page is version-sensitive.
Primary sources
Checked against these public pages. Official sources define confirmed features and status; community sources are labelled as such and used for game data that the developer does not publish directly.