From PokéHeroes Wiki
How to obtain it
- You can obtain a Lava Cookie from the Route 102 rumbling area.
- Lava Cookies can be cooked at the Berry Garden.
How to use it
- Lava Cookies were needed to proceed to the other half of the ORAS Event.
- Lava Cookies can be used to evolve Obsidianix into Obsidialix.
- With the release of the Obsidianix event line Lava Cookies are tradeable now.