User blog comment:Sakkeman/Your Weapon/@comment-24041748-20131110170837

Doom Hammer: crafted with 18 Chlorophyte Bars, 20 Souls of Night, a Pwnhammer, a Paladin's Hammer and a Night's Edge (for that extra taste of evil and also to make it a true endgame weapon)

It would do slightly more damage than the Chlorophyte Warhammer, to make it one of the endgame weapons. It would give off light similar to the Night's Edge. It would shoot out small, purple hammers about as quickly as the Terra Blade that pierce enemies, but don't go through walls (to keep it balanced). Also, you can use it as a hammer, so you can also swing it around continuously.

In short, it's basically an upgraded, autoreuse version of the Terra Blade.