Oh, at level 18 I gained knowledge of Heal, Destroy Undead, some crap I don't remember right now - and Acid Ball. Can I even cast spells without Concentration? And if I can, it will use up a lot of castings, right?
I've got some adamantium long swords and stuff, but the damage is ... not sufficient for end-game. I'm up to Water Temple, but that's not going to be a problem, it's easy. I guess I'll just keep going and see what happens. I haven't done Darkforge, yet, so it might be worth a look now - might even luck out on a good weapon or some red dragon scale male or something!