2 items: Adds 3-129 Weapon Damage
3 items: Adds 15-657 Weapon Critical
4 items: Adds 3-129 Weapon Damage
5 items: Increase the damage your Physical, Bleed, Poison, and Disease damage over time and channeled abilities do by 20%.
The set consists of medium armor and jewelry in all slots, as well as weapons and shields of all types.