Chwidencha

Chwidencha (also known as "spider leg horrors" by surface dwellers) are horrific spider-like creatures created by Lolth from drow that have failed her tests, or have otherwise displeased the Spider Queen.

Appearance
A chwidencha seemingly consists of nothing but a writhing mass of long, hairy, flexible spider legs. Each leg ends in a barbed spike and has one side covered in thorn-like hairs that allow the limb to easily tear through the flesh and bone of any unfortunate victim. The creature does have a central body hidden under the dozens of legs that radiate from it in a single point, but this is normally only seen after the chwidencha's demise. Chwidencha are roughly 11 feet in diameter and can weigh as much as half a ton.

Behaviour and abilities
After its transformation, the once-drow becomes a nearly mindless beast that moves about in a skittering undulation and exists only to hunt down out any living creature that strays into the dark caverns deep beneath the earth that chwidencha lurk within.

Much like with driders, drow society casts out these creatures that have failed their goddess's tests, leading chwidencha to harbour a particular hatred for their former brethren. However, they are sometimes kept by drow, or other evil races, in deep, metal-lined pits, where they are used to dispose of waste, carcasses, prisoners, criminals, or those that drow society deems weak and incompetent.

Chwidenchas are able to climb up walls as well as any spider, but are also proficient burrowers that are able to move as quickly under the ground as they can on its surface. A common tactic for chwidenchas is to hide beneath a layer of earth while using its tremorsense to notify it of any approaching prey. Upon detecting a suitable target, the chwidencha will burrow under or behind their prey, then suddenly emerge to strangle, constrict, or impale with its dozens of spiked legs. Chwidenchas are also known to simply charge at their prey in a flurry of legs and claws in an attempt to crush them with their many limbs. After killing its prey, the chwidencha will usually drag the body off to somewhere it can safely devour its victim, as it takes it several hours to do so.

Encountering a chwidencha can be terrifying indeed, owing to their fearful presence and their ability to regenerate lost legs within a day, which can be lopped off with no damage done to the beast itself. However, they are very sensitive to sound, which leaves them particularly vulnerable to sonic attacks; loud, high-pitched noises will cause a chwidencha to attempt to flee. They are also vulnerable to thunder damage.

A chwidencha is able to understand Deep Speech, but does not speak it.

Variants
Aside from the standard variety, there is also the weaker lesser chwidencha, and the larger and stronger greater chwidencha.