start at wild drow (1 w from upper spider tunnel xroads). He mentions:
zombie lord
scorch
muliskar
zankfyn
jermlaines
Cyrcia certainly like those big pets. Huge demon spiders as red as any elves blood are among her favourites, and I've catch myself admiring those beautiful predators more than once.
Missions
1 You have decided to learn your way around these dark tunnels so you do not become lost and mad like the Wild Drow you stumbled upon. Continue your travels throughout the underdark until you are confused no more.
3 You puzzingly notice you haven't stumbled much the last hour...