@Deadwing No, you can't. Occult acumen only works on spells that use Elemental or Dark magic skill and do damage to the enemy. Conserve mp gear would indeed be the way to go. Unless the potency of the buff you're casting is affected by enhancing magic skill, in which case Olympus sassh, or it's Refresh, in which case Gishdubar sash, or a Drain spell, in which case Austerity belt +1.