> For the complete documentation index, see [llms.txt](https://wiki.coldmc.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://wiki.coldmc.com/systems/classes-lv30/class-evolution-skills-lv35.md).

# Class Evolution Skills

## What is an Evolution Skill?

Each **evolution line** in a subclass tree is a chain of evolution skills. Taking the next one in the chain strengthens the line's passive effects. They are passive, like other class skills, and need no Stamina or Mana.

Evolution stages open at **prestige 3, 7, 12 and 18**. See [Class Evolution](/systems/classes-lv30/prestige.md).