Hello, our raid team only consists of 2 to 3 warlocks. We got plenty of mages, all frost, and no shadow priest sadly. So I always cover CoE on bosses but its a point of debate if CoS is worth using over agony/doom, especially considering debuff limit.
Does anyone know when its optimal? I thought yes with even just 2 locks because of the lower resistances alone with the damage buff being icing on the cake.