Spell Absorbtion effects your Atronach (and Familiar) summon spells, like telekinesis in Oblivion.
This makes them unreliable, but they do regenerate magicka, so it doesnt make them useless.
Your opinions?
P.S. (just putting this out here, because its not getting enough attention) A CORNERED RAT DOESNT START ON ANY OF MY CHARACTERS. Diplomatic Immunity finishes, A Cornered Rat DOES NOT START. My main quest is never doable. A fix would be appreciated.