Skin changes – Kassadin dressed in red, white and green clothes with ice decorations.. Specific in-game changes:

• Model: Moderate model changes for Kassadin..

Skin bio & introduction: – Reigning from his frozen throne on a lonely mountain, Kassadin prepares in secret for a special festival hidden deep in the icy wastes. Whether it’s a winter sports festival, none can say… except for the attendees, who think he’s being ridiculous.

How to get this skin? – The skin is not available for purchase and has been placed in the Legacy Vault (they can still be mystery gifted, and only appear in a champion’s information tab if owned). The vault is usually opened for limited runs and this skin can then be purchased in the Riot Store. In my experience it can be rather long between each opening of the Legacy Vault, hang tight!

Worth buying? – Festival Kassadin is a Legacy vault skin — rarely available and not in the regular store. You can preview any skin for free on the PBE server before buying. Learn how to access the PBE here.