Arse Nath should not delimb, ever

[Sundance]

I initially grumped when reading Flabs post but changing it a stunless spell which just knocks off butts and limbs would be actually be much better.

But i'd change how that damage is inflicted. Firstly remove the damage on all counts and let the limb % be more reliable but less vicious. So when first used, it removes your butt. second, third, etc, use it will remove x1 limb per use.

Currently it has a rather nasty tendency to remove 2-3 limbs if your butt is missing, with minor damage to boot.