2 items: Adds 25-1096 Maximum Magicka
3 items: Adds 3-129 Spell Damage
4 items: Adds 3-129 Spell Damage
5 items: Increases the duration of your Flame Damage over Time abilities by 5 seconds. This effect does not work with beam or channeled effects.
The set consists of heavy armor and jewelry in all slots, as well as weapons and shields of all types.