Beast Master:
Set bonus
(2 items) Adds 657 Critical Chance
(3 items) Adds 129 Weapon Damage and Spell Damage
(4 items) Adds 657 Critical Chance
(5 items) Adds 1200 Weapon Damage and Spell Damage to your pets.
I set the amount so high as pets only make up a small amount of damage on any given build and it would do nothing for your other skills. I did the math and even 800 Weapon and Spell Damage was a DPS loss hence my decision to have it so high. However, having it grant both weapon and spell damage would allow a stam toon to run matriarch and a mag toon to run the clannfear if they wanted.