Santa's Castle

"'Santa doesn't live in some workshop, he has his own castle centralized in the North Pole! This royal upgrader seems to be boosted by other holiday exotics!'"

Overview
Santa's Castle is an Exotic-tier upgrade which was obtained in Part 2 of Christmas Update 2019 by opening the Sophisticated Gift of Kings gift.

It functions as a Christmas-themed variant of the Great Pumpkin, becoming more powerful as ores are upgraded by more Christmas-themed Exotics.