[(E)]

Depthlings

A magically created Goblin-kin subspecies.
Smaller, weaker and even more cowardly, and sadistic.

Numerous, great at stealth and small places. Possessing Dark vision they naturally avoid light and hide in the dark.

Less an opponent and more of an infestation. They will attack from stealth and then leave, hoping whatever substance they coated their weapon with will have the desired effect.

They could almost be treated as an environmental condition.