Skin changes – Tahm Kench as Mystical Lunar frog. Specific in-game changes:

• Model: New model, textures and animations!.
• New particles: All new skill particles and animations!.
• New animations: New animation particles for every skill!.
• New sounds: New Lunar Revel inspired sounds.

Skin bio & introduction: – Craving the smell of coins over all earthly delights, Tahm Kench rises from his kingdom beneath the river every Lunar Revel, seeking bargains with mortals. Though his targets are inevitably left destitute, it is thought that with the proper reverence and careful wording, one can escape his bargains unimaginably wealthy.

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