Syvarra's Scales is a light, medium or heavy armor set. When you deal damage, you have a 5% chance to cause a burst of lamia poison that deals 967 Poison Damage in a 5 meter radius and an additional 5802 Poison Damage over 6 seconds to all enemies hit. This effect can occur once every 6.5 seconds.
Syvarra's Scales is part of the Thieves Guild DLC and drops in Hew's Bane in the Overland content. You can also find it on Guild Traders. Each set item is bound on equip. You can acquire light, medium or heavy armor, jewelry and weapons for this set in the Ra Gada motif style.