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.
An evil ruler got the idea of mixing a trampoline and a gallows together. As long as the one to be hanged bounces on the rubber trapdoor it won't open, but bouncing gets very tiring after a while.