if i remember the d&d rules correctly, it would dissolve all organic material, so the handle of the ax would be gone. don't worry about me, i just like to nitpick.

Medievil jell-o? That's awesome. I love the concept and I'd like to see a cube shaped monster made of gelatin (that is apparently acidic). And to top it off, when that guy got killed, the jell-o got weapons to use.

lol, i love it,
i've played alot of games where you get attacked by slime but it never seemed to make any sense to me, this makes it seem more plausable.