The Wanderer Wrote:...I can hardly believe I never made that connection before.
(The answer, of course, is "whatever Coinspinner wants to happen", insofar as it gets itself lost by one owner to be found by another whenever it sees fit. The question to that answer, in turn, is of course "why would Coinspinner have sought out Tsunade in the first place?".)
I was never under the impression that there was any sort of will involved. Coinspinner just randomly disappears after a random amount of time has passed. (I'm pretty sure there was also one case where Coinspinner was taken by force. Luck isn't always enough?)
I suppose to more directly say what I was thinking "What happens when, for an unknown period of time, *anything* related to chance will go in Tsunade's favor?" (And hopefully, there'd be a more interesting answer than just "gambling".)
Shieldbreaker would be much less of a force in the Narutoverse, given the greater chance of running into someone who fights unarmed by preference rather than necessity. Woundhealer, on the other hand, is pretty much universally applicable.
On using Farslayer... I think there was a scene in Farslayer's Story where someone threw it *by accident*, and the fact that they were trying to kill something with it at the time was enough to make it work. The actual throwing seems to be required though, and seems like something relatively few ninja would try to do.
The Mindsword's a nasty piece of work in any case. But I imagine it'd change hands a lot more in the Narutoverse. Especially with that "Hidden Effect: Wielder is excessively impressed with their own awesomeness" it seems to have.
-Morgan.