Having just blasted myself in the face and mostly killed myself in one hit it seems the self cast damage reduction of the 'Selfish' spellcraft perk does not work. Neither has my reported melee damage been increased with the 'Exchange' perk. It takes as many hits to down a minotaur with the perk as without it which seems nearly impossible if the perk is doubling my melee damage and then reapplying it as magical damage. Is this a known bug? Do they need to be retrained?