Leaked info on a new Mastermind set - Beast Mastery:
Call Swarm (BEE SUMMONING! Ranged attack, Light Lethal DoT)
Summon Wolves (Third wolf is Alpha wolf, gives leadership to your other wolves. Melee pets.)
Call Hawk (80 ft Ranged Attack, High Lethal Damage, -ToHit on enemy)
Train Beasts (First pet buff power)
Call Locusts (Cone Ranged, Moderate Lethal DoT, -Speed -Def)
Summon Lions (2nd Pet power, up to 2 lions, melee attacks and self-damage buff)
Fortify Pack (Very interesting buff. Scales off stacks of Pack Mentality, gives pets Defense and Regen based on your stacks of Pack Mentality, prevents you from getting stacks while active. Passive bonus: Pets get increased crit chance for every stack of Pack Mentality you have, as long as you have this power)
Summon Dire Wolf (Final Pet. Melee and Ranged damage, self buffs)
Tame Beasts (Final Pet upgrade power)