> For the complete documentation index, see [llms.txt](https://open-gaming-group.gitbook.io/universal-gaming-system/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://open-gaming-group.gitbook.io/universal-gaming-system/playing-the-game/magic/mana.md).

# Mana

The ability to cast a spell depends not only upon you knowing (and being powerful enough) to cast it, but your also having the energy to do so. Mana is a reflection of how much magical energy you have available to you at any given time.\
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A caster begins each day with mana points equal to his caster talent level multiplied by 10 (e.g. a level 8 arcanist starts the day with 80 mana points). This is called a mana pool. You can cast a spell only when you have enough mana points remaining in your mana pool.\
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There may be ways provided by your game master to expand and/or recharge your mana pool during the game day, such as magical items or potions. Mana may be referred to by a different name depending on how your GM has styled his world and game, but it will, in essence, work the same.