A tribe of goblins has claimed many rooms on this level and erected a bazaar. These goblins oppose the Xanathar Guild and its beholder overlord. The rest of the dungeon is infested with sentient magical experiments and leftovers from the days when Halaster’s apprentices used this level as a laboratory. The characters might also encounter a troublesome drow, a wererat gang, and members of a doomed adventuring party.