2 items: Adds 34-1487 Spell Penetration
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: Using a Fully-Charged Heavy Attack grants you and up to 11 group members within 28 meters Major Slayer, increasing your damage done to Dungeon, Trial, and Arena Monsters by 15% for 1 second for every 8000 damage dealt. Roaring Opportunist can only affect a target every 22 seconds. Minimum duration: 5 seconds. Maximum duration 12 seconds.
The set consists of light armor and jewelry in all slots, as well as weapons and shields of all types.