Skin changes – Karma gets heightened to new levels of power. Specific in-game changes:

• Model: New model, textures and animations!.
• New particles: All new skill particles and animations!.
• New animations: New recall animation!.

Skin bio & introduction: – Commemorating the 2017 Mid-Season Invitational in Brazil

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