How does one mage get about doing the lvls where magics cant be cast? its soo hard, i rely alot on my spells, and in here i cant cast them, i have a staff of rymne +4, and am lvl 13 (lvl 21 Kensai who is inactive atm). Any help would be greatly appreciated as i just cannot clear ANY more rooms, ive done about 3 so far, the balor one with the pillar of stone, the one with the succubus, and the wild mage quasit room.

Well in the Balor room you can cast magic.
I am soloing a Fighter/Mage/Thief
And i reloaded for about 50times before i took out the Balor gang.