> For the complete documentation index, see [llms.txt](https://greever.gitbook.io/eng/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://greever.gitbook.io/eng/greever/4.-game-fi-system/e.-composition-system.md).

# E. Composition System

The Composition requires leaves and the component parts, leveling up your NFTs without failure and changing its image as well.

Only level-1 NFTs can be used as a component.