Warstaff (Warhammer/staff combo). Call of the Storm is five feet even. It is an archmage’s staff that has been modified into the Warstaff by adding a Warhammer’s hammerhead and infused with magical reserves.
A cave with weapons sunken into the walls, blades sticking out of the floor and ceiling, and so on. Possibly, any weapon used in it could be torn out of the hand and sink into the stone.