From the readme (which took longer to write than the entire mod):
You can download the .rar-file containing the entire mod, together with a WeiDU-installer, here.The mod replaces the spell Timestop, and changes the description of the spell and the scroll which means that neither you or your enemies can stop the time with it. Instead, the spells deals the caster some damage.
Why have I created such a mod? Only for the reason that I find the spell timestop extremely annoying. Many mages, especially in the later stages of the game, use it frequently, but when timestopped, they don't do anything reasonable with the time given to them. This is due to the bad mage-scripts in the game, but I'd rather change the spell than change the scripts.
ATTENTION!!! You won't either be able to stop time with the spell. Your mage will also take damage for casting it.
The damage the spell deal the caster is just a punishment for the *intention* of using the spell. It's not much damage. It won't help you kill mages.