Winter Time Gnar or Ice Age Gnar
Main Changes to the Skin:
Rage Gene - Particle Effects would be changed to a more Snowy one Boomerang Throw - Instead of a Boomerang it will be a snowflake Boulder Toss - He would throw a giant snowball Hyper - Would leave a trail of powder snow Crunch - Instead of Shattered Ground it would look like Shattered Ice
Although I do not have pictures this was just a thought I had.