Dweomercore

Dweomercore was the ninth level of Undermountain. An arcane academy founded by Halaster Blackcloak himself, as of 1492 DRit was being run by an arcnaloth and a night hag by the name of Wormriddle.

Exits
As of 1492 DR, the following ways could be used to leave Dweomercore:


 * A tunnel up a level to Slitherswamp, in the north&mdash;west corner.
 * A pit in the middle of the level that dropped straight down to level 10 - Murial's Gauntlet.
 * An archgate in the south part of this level, leading to level 4 - the Twisted Caverns.

Inhabitants
Arcanaloth

An ally of the Mad Mage, it employed nycaloths and mezzoloths, and granted safe passage in exchange for magic items or assassination of the rampaging bone devil.

Wormriddle the Night hag

Proud commander of 4 flesh golems. Ready to offer spells in exchange for souls, and wore a mummified kitten's head, justifying for her fear of felines, from cats to Tabaxi.

Vile Students

 * Spite Harrowdale, a Rashemi human archmage in the guise of a 12 year old boy, with an oni companion.


 * Cephalossk the Mind flayer, a lonely illithid arcanist with a hatred for Spite Harrowdale.


 * Nylas Jowd, a Thayan mage already enrolled in the Red Wizards of Thay, with two invisible will-o'-wisp companions.


 * The Horned Sisters - Turbulence and Violence - were tiefling mage sisters who tried to join the Arcane Brotherhood in Luskan and were denied. After staying in Skullport for a few years, they ended up here.


 * Elan Tanor'thal, a drow mage who's house run a slave trade business in Skullport but was driven out by the Xanathar's Thieves' Guild.