Originally Posted by
Grond
"Legitimate" methods:
commanding a companion to attack the shopkeeper
Glitches:
[*]Companion sacrifice - if you have angered a shopkeeper without directly attacking them (say by ordering a companion to attack them), the shopkeeper will become peaceful once they have killed one of your companions.
Wait, so if you have one companion (maybe two to be on the safe side) you can sell all the artifacts to Waldy and pick them back in a few turns.
Live and learn, man.
So far rolled 15 casters with RoDS and shamelessly killed them within 200 turns. For eternium glory!
(after 15 I stopped counting...)