Hey folks don't forget that the troll fingers would be in the players stomach, and trolls don't regenerate acid! So i think it would be unlikely the fingers would be re-usable unless maybe it was barfed up right away.
This is a really cool item. I think i will use something like it. Although i think i will alter it and say you have to keep the finger in your stomach until it is completely digested (say an hour or so) before you get the temporary effect. And i will probably lessen it to Fast Healing 1 or maybe 2 ... just my 2 cents.
