I considered something along these lines. The magic of the rings only works because each ring is unique. If you were to craft two rings with the exact same hue, tone, and size, those two rings would not exclude each others while all other rings function properly. Go to Comment
It seems unwieldly and complex, then again there is a weapon for everyone. Does the extra weight deal extra damage? Is this weapon culturally significant to some people? Was it created for a special purpose?
Cool thought! I chose mercury because it weighs a ton and because Mercurial is such an awesome word, but you could easily fill the container with poison to lace the blade, an acid, or even a flesh-eating bacteria. Kudos Go to Comment
Good point. I talk about "hands of a graceful warrior" and then say that it's a heavier than normal sword. The sword is actually heavy only while in sword form. In whip form, it should be much easier to fling about. Go to Comment
I couldn't work out how to make it a light and graceful weapon in longsword form. I imagine that it's a little clunky until unleashed. In whip form, it could be very quick and deadly. I do agree that it would take an exotic proficiency to adequately wield, and it probably would be much more painful to be struck by a 10 pound sword tip being whipped at you. Go to Comment
Another real world thing. White tea. Can only be picked two days a year, the two days before the flowers blossom. Could be a similiar plant that...is the deadliest poison known, cure known diseases or psychosis, or a potent herb that just tastes awesome.