For tricking a wizard's servant and gaining access to his chambers, the Powers granted thee a Mark.
Obtain a mask from the guy in the non-pk room on the southeast area of the drag in Keep by giving him I think 1 million gold? Must be evil or -1k alignment to trigger him. Once you have the mask, wear it, then journey to the all CPK area under Keep (near Zombie T-rex). Enter that area from the passthrough down in the soundproof hallway (near the bouncer.) Follow the path until you reach a portal that appears every so often, enter the portal and visit an NPC in that tunnel for the mark. I forgot all of the details.. this was just by memory alone. Someone fix this.-
To get to the soundproof room, head to 3rd west path heading north from the southwest corner, instead of going up, do down through the illusory wall into the soundproof hallway. Go 3 north, Northeast and then dig east twice and go north into 'A Niche Below the Graveyard Path' Wait for the teleport to 'A Rocky Ossuary' and follow the path eastish-ward until you find the portal.
Do not cross the bouncer in the soundproof area or he will instakill you.
The portal appears periodically and remains for (unknown). Enter the portal and make your way until you find 'a long shadow is cast from a non-existent light'. Here you will wear the mask: You take the mask of a sorceror of infamy and ill repute from Vandemaar's Trunk.The mask of a sorceror of infamy and ill repute hums softly as it reconfigures itself to suit your experience. (be careful not to remove mask while in cpk as it is instant death to remove out of safe). You will then get the script: You have been granted the Mark of Tricks! You gain 75 archon points! You gain 18 practices! A shadow whispers to you, 'Be careful there, m'lord. The room's other sentries have been instructed to kill everyone they encounter besides you- after the tragedy. Do not bring anyone else into the room, or take another's form.'
you will find yourself in 'A Blood-Soaked Abbatoir' with A blood-covered crystal ball is placed on the antique table at the center of the room. There is a N/W/E/S exit. Go North and search for a secret up. Go up, and go Up again, you will find yourself in 'A Hidden Alcove' which is the CPK north of Lady Maldra, Search to find the south, it was locked, but magic unlock worked, open south and you will find yourself at Lady Maldra.
You can keep the mask to be able to enter The Chattering Skull Tavern, or you can turn it back in to the banker for 950,000 gold.