Ho Ho Ho Santa Bard is coming to town at Summoner's Rift
I'll start out with a comparative list. Santa and Bard both have these similarities: they both have large white beards; are somewhat large; have ways of traveling large distances in little time; command magical beings to help them out; and seemingly defy laws of physics.
His basic visual would in short terms, look like santa, except for the mask, that stays. He would have red robes with fluffy white linings and what-not, and his horn thing would be a santa hat,
Passive: Traveler's calling- Bard's chimes would be jingle bells or just Christmassy bells. His meeps could either be tree ornaments or regular meeps with elf hats on that would create red and green sparkles on impact.
Q: Cosmic Binding- shoots out a snowball that if stuns, creates Christmas lights between targets.
W: Caretaker's Shrine- creates a Christmas tree, that will gradually gain presents and decorations, and light up when at full charge.
E: Magical Journey- creates a chimney at the entrance and fireplace at exit, may or may not include smoke in between.
R: Tempered Fate- afflicted enemies would have Christmas decorations strung on them for the duration of the ult.
Anyway, that's my idea for a Christmas skin, I feel like its a great idea but if anyone has any ideas or better names then Santa Bard post them in the comments.
