> For the complete documentation index, see [llms.txt](https://eternal-legacy.gitbook.io/about/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://eternal-legacy.gitbook.io/about/understanding-the-basics/understanding-mana.md).

# Understanding Mana

* Mana is the essential resource used to play cards, with each card having a specific mana cost.
* You begin the game with one mana crystal and gain an additional crystal each turn, up to a maximum of ten.
* Mana replenishes fully at the start of each turn.