Star's right. I went off what the info said when I examined the arrows, didn't look at the code or go into great detail on the numbers. Ah, it raised my wisdom mod to 33 -- no wonder. I swear, stop playing NWN for a few months and you forget how to do everything
I've found spellslots to be the biggest problem here because of gear limitations. If I am the only ploder, I tend to save my plodes a bit more for fumes/winds/machines rather than willy-nilly ploding for max kill count on a pure ploder.