Ho , ho, ho its time to visit the naughty kids.

TBH I can easily see Saint Nicholas being a rather unique member of the Assassins...
Going and climbing down peoples chimneys is often something people only do once, yet this guy did it so much we tell stories of it.
He kills or sneaks past the guards outside the house/fort/safe-house w/e, and then he climbs straight into the targets BEDROOM while they sleep and visits them leaving a gift of death and probably a much needed change of pants.
Great guy, he leaves the toys for your kids and has the bag to haul away the bodies of anyone who catches him in the act - Also making him Krampus as well.

its pretty fascinating that ai understands lighting