Grizabella, the Realistic Fighter Mage

[MongoJerry]

There's also Psycop... Telekinesis as the main killing spell, firebolt for lightning immunes.  (only on the staff, I believe)

Sadly, Telekinesis doesn't have any synergies. *shrug*

The main problem with these kinds of low-power sorceress builds, and believe me I've been thinking about them a lot, is that monster life regen rates are so incredibly high now. Grizabella couldn't do any damage to Poison Immune monsters in hell using her 'Passion' blade, because the monsters repaired all the damage as fast as she dealt it. She had to switch to her 'Call to Arms' blade which has Prevent Monster Heal to do any damage to them. An underpowered casting sorceress doesn't have the luxury of simply putting in a poison charm in her inventory or of using a Prevent Monster Heal weapon. The only options I see are equiping your merc with poison dealing items or having your sorceress toss a choking gas potion at the monsters before she attacks them with her spells.