Make a dnd jester
I want to make a character in case my main character dies in a campaign, or if I join a different campaign and want to use this character.
The backstory is he was a royal court jester half-elf who served in a kingdom in the icy/snowy areas. He grown up being the jester and is a late teen. One day, the old king dies and his son takes over, but unlike his kind and well-liked father, he is greedy, unlikable and taxes almost everyone except the high nobility. My jester is the only one who brings smiles to faces at the moment and tries to advise the new king what to do. During the new king's tirade, he accuses my jester's older sister, who was close and was a royal knight, as a traitor and executes them via beheading. My jester watches in horror and everyone in town is shocked and upset. The sister tells my character to just keep making people smiling right before she died. My character snaps and ends up murdering the royal court who all went along with the young king while wearing a smiling mask before arriving to the throne, where the young king is. Jester is caught but manages to escape with his royal jester clothes, mask, some performing items and a lantern that has his sister's soul inside, like the Ghost Lantern from the Tomb of Annihilation. He is constantly on the run as the young king wants his head, but manages to run into whatever party I get a part of.
The flavor I want to do with him is make him able to cast cold types of spells, like frostbite, cone of cold, ray of cold, frost fingers, ice knife, icing frost's death, snowball swarm, sleet storm, ice storm, investiture of ice, freezing sphere & wall of ice. Other spells that would be in character is like vicious mockery.
Some of his good stats would be charisma, dexterity & wisdom/intelligence (interchangeable). Any ideas of how to bring him to life?