@icedquinn
Question 1: does calm work on all enemy types?
Question 2: wouldn't you have to recast calm over and over again? Wouldn't sneaking be easier?
I've never had a playthrough were I focused on illusion, so I've never managed to have calm/frenzy spells that would be higher levels than what I was fighting.
@icedquinn
I think it disengages combat in Oblivion too. At least that's what I noticed in some creatures.