Other new goodies include
six new prestige classes, 16 new creatures, over 40 new spells, over 50 new
feats, new weapon types, new voice sets, new music tracks, and a new
item-crafting sytem [sic]. As good as Shadows of Undrentide was, the
additions to Hordes of the Underdark look even sweeter. For several
reasons, people love playing and reading about all things drow. This expansion
pack attempts to offer a thrilling Underdark adventure and allow module makers
to craft their own dark-elf tales.