Storm Legion

Those Mantis Clan members who have served the clan for generations will tell tales about caves beneath the mountians of the Matis Lands. They caves were carved out of intense heat and channeled lava. For miles and miles the caves run. Only those of the Storm Legion are taught to navigate through the treacherous and winding paths. Only they can enter the castle unseen and only they know the hidden inlets and coves whose caverns have become warehouses and docks for Mantis smugglers. (Minor Clans p. 14)