The Black Spike

Malachai the Disfigured calls this bleak, stone tower home. Within its walls he summons and binds his demonic allies, often turning a Demon loose on the city below in order to observe its capabilities in battle.

For this reason, the locals have deserted the surrounding area. Trespassers in the surrounding area risk reanimation as skinless zombies to patrol the area. Malachai's tower has neither doors nor windows, though a trap door rests atop the roof. Filling the six-story tower are labs, workshops, and other chambers staffed by quasits and undead servitors. In addition, a tunnel connects Malachai's Basement to the Deeps, giving the Archmage access to the creatures that dwell there and their accompanying treasures.

8/2/1002 Update - Malachai the Disfigured was successful in summoning Yollgotha.  The Heroes of Verdun were too late to stop the ritual and the entirety of Black Spike became the Skinless One's skeleton (see "Belly of the Beast").  Senek the Bard and Luethil Gilyth opened a portal to the Negative Energy Plane and banished Malachai there along with his Chaotic Evil deity.  The results of this have yet to be witnessed.