Blacksmith, Mage Tower.
Both PISORF and the normally fixed BURNDAYRAZ glyph are fixed. There are no subdungeons. The dungeon will have two altars; Jehora Jeheyu, Glowing Guardian, and Binlor Ironshield are possible. Shops appear but Bazaar preps are not available.
None. Note though that since so many monsters blink, blackspace will run out quickly.
Djinn: Magical Attack, Retaliate: Fireball
Bloo Goo: Physical resist 50%
Golem: Magical resist 50%
Dancing Blade: Blink, Death Protection 1/level
Monster difficulty is Vicious (40% above nominal Attack and Health).
The boss is Eeblis ( Djinn icon, Attack 105, Health 399, Magical Attack, Retaliate: Fireball).
The recommended race: Gnome.
The boss is ideally defeated by a combination of melee and via chaining PISORF against him. BURNDAYRAZ is to be avoided given his Retaliate: Fireball. Ideally, before the boss fight, position the boss (using WEYTWUT, PISORF and/or WONAFYT) at the end of a longer wall, or just next to another monster.
Depending on your altars you may choose a different approach. If you take the Glowing Guardian, you can optionally benefit from his Humility, and maybe a Protection or two, however you will most likely want to convert out towards the end of the boss fight latest, to allow you to drink the Mana Potions of your Gnome Sorcerer. You can take Binlor at the start, build up Piety and then convert over to Jehora for a bit of late-game push (you can get one full restoration with Chaor Avatar, and have a chance at a second with Last Chance). Any two of these gods can give you a bit of Magic Resistance as well as Mana (and Health) restoration.
If you are willing to forgo the more permanent bonus of other Blacksmith items, consider preparing the Slaying Wand, this gives you a shot at killing a high-level Dancing Blade just before the boss fight, possibly bringing you to within arm's reach of leveling up.
This has worked at least one time. I took a Gnome, prepped Bear Mace and Flame Magnet, worshiped Jehora Jeheyu early, and used his guaranteed WEYTWUT to position the boss at one end of a very long wall. Took one shot each of Boost Health and Boost Mana. Ran out of blackspace at level 5 and fireballed him a couple times, since my health was too low to hit him. Mid-fight leveled to 6 and fireballed a couple more times. Took Chaos Avatar to level to 7, hit him once, and used PISORF until he died, glugging gnomish mana potions along the way.