Skill: Pet Mastery Tiers: Lore (Alchemist), Spectral (Destroyer), Arbiter (Vanquisher)

Rank	Pet and Minion Damage	Pet and Minion Armor	Pet Travel Time
1	+4%	+4%	-8%
2	+8%	+8%	-16%
3	+12%	+12%	-24%
4	+16%	+16%	-32%
5	+20%	+20%	-40%
6	+24%	+24%	-48%
7	+28%	+28%	-56%
8	+32%	+32%	-64%
9	+36%	+36%	-72%
10	+40%	+40%	-80%

Commentary:

This skill increases pet and minion damage and armor, and decreases the time it takes for your pet to go home. If you use summons, this skill is invaluable. The bonus perk of quicker pet trips is nice but not very important if you're patient.