# Custom Items - [Mega Stones](https://wiki.frontier-mc.com/custom-items/mega-stones.md): These items are used to mega evolve your pokemon! Remember, you need a keystone to be able to mega evolve! - [Z Crystals](https://wiki.frontier-mc.com/custom-items/z-crystals.md): These items are used to allow your Pokémon to use z moves! Remember, you need a Z-Band to be able to use them! - [Cosmetics](https://wiki.frontier-mc.com/custom-items/cosmetics.md): A list of all custom cosmetics that have been added to Frontier during special events and celebrations. - [Key Items](https://wiki.frontier-mc.com/custom-items/key-items.md): These items allow you to perform gimmicks - [Spawn Items](https://wiki.frontier-mc.com/custom-items/spawn-items.md): These items are used to spawn Pokémon based on certain criteria. --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://wiki.frontier-mc.com/custom-items.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.