Skin changes – Viktor in the beginning stages of his transfomation.. Specific in-game changes:

• Model: New model for Viktor and his staff..
• New particles: New particles for Gravity Field..

Skin bio & introduction: – Rewinding the clock on his mechanical upgrades, the skin shows him equipped with some early versions of his armor and arms. Crude and rough around the edges, the Prototype Viktor skin works perfectly given the robotic nature of the character. The in-game model look terrific, and his staff completes the new look. In addition to these graphical changes.

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? – Prototype Viktor is a Legacy vault skin — rarely available and not in the regular store. It includes custom particles. You can preview any skin for free on the PBE server before buying. Learn how to access the PBE here.