Gem of the Ice Castle

A crystal left behind by Ice Fortress Geo Zagnus, Giant of Absolute Zero, an unstoppable force of destruction that lays waste to all it sees. Long ago he was merely called Ice Fastness, but he continued to grow and soon he was able to change cold into magical power, increasing his destructive abilities. This treasure is a crystallization of that power, and if it were to encounter the Giant's arms, it could transform power from the very air and climate to give birth to a new creature of destruction.