Skin changes – Sion as a zombie warrior improved with hextech technology.. Specific in-game changes:

• Model: Major model changes for Sion and new model for his axe, Chopper..

Skin bio & introduction: – Over the years, many have asked should art be chained by the fleeting concept of morality? Or should science bend a knee to the laws of man? Some believe progress is not made by holding ourselves back, and though we may give birth to monsters… Hextech will ‘ always guide our path… V-

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? – Hextech Sion 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.