Skin changes – Sona lets the Christmas spirit engulf her: she dresses for the occasion and decorates her Etwahl accordingly.. Specific in-game changes:

• Model: Major modifications to Sona’s model and small additions to her Etwahl…
• New sounds: New joke for Sona, she plays an excerpt of Deck the Halls..

Skin bio & introduction: – Drifting through the streets as she plays, Sona’s beautiful melodies bring out the wonder of fresh snowfalls, quiet evenings by the fire, and time spent with family and friends. She can also weaponize these songs, raining destruction upon those who would spoil the holidays.

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? – Silent Night Sona 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.