If I remember correctly, Jack Frost was a strange Advent (with history), but still an Advent. Saint Nicholas, the other half of that story, is very possible where the change happened.
Jack Frost was indeed an Advent event, the one which I'm very sad DMM never had motivations to make a re-run of.
By far one of the best events back in the day.
Looking for a kinda good account? Send me a Private Message or meet me at Discord: L'aventale.-#4530