Bone spider

Bone spiders were a type of construct that resembled a spider and were made of specially treated bones.

Behavior
These constructs had intelligence comparable to that of a feral spider, but were capable of understanding simple commands.

Abilities
The fangs of these constructs with laced by their creators with a deadly magical poison.

Combat
These creatures fought in a similar manner to actual spiders.

History
A smaller variety of these constructs were frequently used by the drow wizard Valan Jaelre in the late 15 century DR.