> For the complete documentation index, see [llms.txt](https://aok.gitbook.io/what-is-seiren-war/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://aok.gitbook.io/what-is-seiren-war/use-cases/mint-cards.md).

# Mint cards

Create new cards and upgrade them

Create your own guardians and bonus cards, and play to increase the level and tune the cards.

![Create new guardian](https://98282314-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FymP5t6aeiYKTOI2A1OjJ%2Fuploads%2FgkQKvOeJZ7FZZwnrO9od%2Fimage.png?alt=media\&token=259f55da-1cc4-4f3d-9ee1-fc66163d1984)

Update the bonus cards with materials to receive unique combinations and features.

![Upgrade bonus card](https://98282314-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FymP5t6aeiYKTOI2A1OjJ%2Fuploads%2FvYFt0hyj1BcPimGJ5wvF%2Fimage.png?alt=media\&token=438f3278-20f9-4523-bcbc-7efbd52906b1)