Unique. Spawn. The Wind-deeps and The Rusted-deeps each have an additional automatic-attack: Spawn-2 strikes with 16/8 prowess/body. In addition, for each Spider attack your opponent faces, you can choose for it to be at +1 prowess and detainment.
"...such as Beren fought in the Mountains of Terror in Doriath ..."
-LotRIV