Drider
These strange creatures have the head and torso of a Morwen and the legs and lower body of a giant spider. Driders are created by the drow’s dark goddess. When a dark elf of above-average ability reaches 6th level, the goddess may put him or her through a special test. Failures become driders.
Driders are able to cast all spells a normal Morwen can use once per day. They also retain any magical or clerical skills they had before transformation. A majority of driders (60%) were priests of 6th or 7th level before they were changed, all other driders were mages of 6th, 7th, or 8th level.
Driders always fight as 7 Hit Die monsters. They often use swords or axes, though many carry bows. Driders can bite for d4 points of damage, and those bitten must save vs. poison with a -2 penalty or be paralyzed for 1-2 turns.
Because they have failed their goddess’s test, driders are outcasts from their own communities. Driders are usually found alone or with 2d6 Huge Spiders (10% chance), rather than with Morwen or other driders. They are violent, aggressive creatures that favor blood over all types of food. They stalk their victims tirelessly, waiting for the right chance to strike.