Skin changes – Kog’Maw trying to look like a reindeer.. Specific in-game changes:

• Model: Minor model changes and new texture for Kog’Maw..
• New sounds: New joke for Kog’Maw: an extract of Deck the Hall..

Skin bio & introduction: – It is rumored the Kog’Maw stole his glowing nose and deer antlers from a particularly adorable creature he devoured. Whether or not the theory is true, Kog’Maw is now the most famous reindeer of all.

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? – Reindeer Kog’Maw is a Legacy vault skin — rarely available and not in the regular store. It includes new sounds. You can preview any skin for free on the PBE server before buying. Learn how to access the PBE here.