DF version of the Banish spell idea.

The spell Banish seems like a cool spell but in DF it seems to be little used because combat is so fast. I was thinking what if the spell functioned differently? What if the spell inflicted damage on a demon or spirit and if the damage was more than the Hit Points then it would be shunted back to Hell or the spirit world? Maybe high Magery levels could increase the amount of damage that could be inflicted? Just a thought.

DF version of the Banish spell idea.