We have “Santa”:
Deckard would be the most obvious candidate now. Has the silhouette for a bag-carrying beardy oldman, throw “presents”.
And maybe a Santa skin to Uther too? I’m fine if the 5th Healer is not “Santa” but still xmas-theme-ish.
Like a WinterMother Whitemane, or a Angel of the Tree Auriel!
Uther better be santa cause he is “daddy type”, like Malf or reghar
Deckard is a bit old for such things
No way. Can we PLEASE have a deckard santa?
Probius as santa’s lil helper. Pylons are christmas trees.
Stay close to the christmas tree it will boost your spell power.
No way! he’s THE Santa-type. He carries stuff on his back, throw kind things, draw triangles (xmas trees with xmas lights) on the ground. And can summon a snowstorm of presents 
He sure is, especially in that Lumberjack skin!
A certain lich could use a Krampus-like skin…
(yes I’m a broken record with the KTZ skins, give him at least 1!)
More like something like… and Ice Wraith.
Like an evil ice-spirit of the forests/mountains.
Anduin could totally be an elf.
Er, the Santa kind, not the Sin’dorei kind.
The Will Ferrell kind.
Ana and tyrande could be ms. claus
Idk much about Christmas tho
Santa is supposed to be old though like 70-80+ years old but somehow still jolly and fat
I actually see butcher as a better Santa. Imagine him attacking with that curved candy bar which name i dont know about and furnace blast unleashing presents instead of fire.
Krampus.
I support both a deckard and Uther.
Deckard would just be an old man in a Santa suit but Uther you could make him have a naughty list in his hand and easily pudge him out a but 
Oh boy Uther about to get those thirsts
So much this.
Just to add to this… His cube could be an exploding christmas tree ornament. Though it would have to be kinda cubish, maybe with rounded corners. And his potions, either…
Small (tiny, somewhat thin presents) normal(square present) super(either bigger or change color)
or
Possibly different sized snowflakes.
And ABSOLUTELY NECESSARY. His staff MUST be a giant candy cane.
Brightwing as fairy, polymorphing enemies to raindeers.
Love the Cain ideas and Krampus would be cool!
Calm down… skins for probius pffftttt. Unheard of.
FRESH CHRISTMAS