Spider Cultist Cowl is a light armor set. The 5-piece set bonus adds 450 Spell Damage to your Destruction Staff abilities.
The Spider Cultist Cowl set is part of the base game. It drops in Fungal Grotto I and Fungal Grotto II in Stonefalls. Each set item is bound on pickup. You can acquire light armor, weapons and jewelry of this set in the Daedric motif style.
ESO
Sets