Have you clerics and mages memoreise EVERY single defensive spell and stuff liek haste. The demons knights are highly resistend to magic so also summon stuff, Mordenkainens swords are best esp. if they are hasted,then take them all at once. And after the battle kill the mordenkainens swords with finger of death or magic missles beacuse they are resistent and
youll get a greenstone amulet of protection for Charm,esp and Psionics.
------------------
Dreams,Where did they go? reflections from thousands of lightyears ago...