Asgore's Trident from Undertale. 

This is a remix of Hao (@yeezihao) model from Sketchfab. I had to rework the full geometry before it could be seperated and sized for print.

The model relies on a 120cm broom handle (or equivalent dowel) 24mm in diameter - the shaft peices act only as a cover and not as a stable support for the head. To build without the rod, infill will need to be applied to the shaft peices and suitable join created however I have my doubts it would be strong enough. The full model stand approx 175cm tall. Its a single colour print in line with the game sprite.

I include a secondary print profile for using a support filament which makes getting the supports out of the mortise joins a LOT easier.

Whatever you are using as a dowel should pass through all 4 sections of the shaft cover (the pieces only differ by the joins at each end) and join the Gem at the top, with the Shaft-End at the bottom. If you are using a smaller rod, then reduce the size/number of the shaft covers and consider the interface into the gem and shaft end accordingly.