The logic behind the mercurial greatsword is that the shifting mass makes it work like a rigid flail. In effect, the shifting mercury is turning a straight bladed sword into something that strikes like an axe, a tip-heavy sword or other chopping weapon.
As such, you wouldn't (or couldn't) use it like a sword, with thrusts and parries, starts and stops. Like a flail or axe, the idea would be to keep the head in motion, the mercury at the blade tip, conserving momentum, until you land a successful blow.
Of course, it would be much easier and cheaper to just buy an axe or flail...or a tip-heavy sword.
At any rate...most of my faves have been covered, from the thing from Darksun to the Gyrespike, Duom and Manti. The Double flail is double dumb...and I can't say much in favor of the gnome hooked pick or whatever.
Hmmm...and add my mucho hate for the spiked chain, though- regular chains are hard enough to deal with- adding spikes all over it is just asking for a good puncturing.
As such, you wouldn't (or couldn't) use it like a sword, with thrusts and parries, starts and stops. Like a flail or axe, the idea would be to keep the head in motion, the mercury at the blade tip, conserving momentum, until you land a successful blow.
Of course, it would be much easier and cheaper to just buy an axe or flail...or a tip-heavy sword.
At any rate...most of my faves have been covered, from the thing from Darksun to the Gyrespike, Duom and Manti. The Double flail is double dumb...and I can't say much in favor of the gnome hooked pick or whatever.
Hmmm...and add my mucho hate for the spiked chain, though- regular chains are hard enough to deal with- adding spikes all over it is just asking for a good puncturing.