2 items: Adds 25-1096 Maximum Magicka
3 items: Gain Minor Slayer at all times, increasing your damage done to Dungeon, Trial, and Arena Monsters by 5%.
4 items: Adds 3-129 Spell Damage
5 items: When you use an Ultimate ability while in combat, you and the closest 5 group members within 28 meters of you gain Major Slayer for 1 second per 10 Ultimate spent, increasing your damage done to Dungeon, Trial, and Arena Monsters by 10%.
The set consists of light armor and jewelry in all slots, as well as weapons and shields of all types.