> For the complete documentation index, see [llms.txt](https://docs.mollector.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.mollector.com/gameplay/upgrading-features.md).

# Upgrading Features

## Fusion

Select and merge THREE random cards of the same level to create ONE higher level card. 

Special cases: \
\- To upgrade a Level-5 card to a Level-6 card requires THREE cards of the same level and type. \
\- To upgrade a Level-10 card to a Level-11 requires TWO cards of the same level and type. 

All Fusion activities will cost $MOL and waiting time is mandatory.

## Mutation

Mutation costs respective Essence Crystal and $RADI as fee. 

Mutant Skills: When the card reaches the Rare level, a new slot will be unlocked, allowing the card to have an additional skill in addition to the card's default skill. 

Mutants will be able to change this 2nd skill. Mutant Stats: change the card's attack and defense stats.