PATCH NOTES V1.0091

Here are the patch notes (1.0091.4719):

ADDED new mastery "Party Leech" to be learned at the class trainer at lvl 70 (Unlocks the ability to invite another character as a party leech that follows you around and share 60% experience)
Added "Party leech" to Recruit - Party UI in basecamp
Added new game systems for "Party leech" to character loader
Added "Party leech" passive, 60% experience drain for party leader
Major balance tweaks to all normal and heroic dungeons (Slightly decreased damage done by all enemies and bosses)
Tweaks to all enemies in "Abyss Gate" Normal
Tweaks to all enemies in "Gardens of Riana" Normal
Tweaks to all enemies in "Frozen Northlands" Normal
Tweaks to all enemies in "Abyss Gate" Heroic
Tweaks to all enemies in "Gardens of Riana" Heroic
Tweaks to all enemies in "Frozen Northlands" Heroic
Tweaks to all bosses in "Abyss Gate" Normal
Tweaks to all bosses in "Gardens of Riana" Normal
Tweaks to all bosses in "Frozen Northlands" Normal
Tweaks to all bosses in "Abyss Gate" Heroic
Tweaks to all bosses in "Gardens of Riana" Heroic
Tweaks to all bosses in "Frozen Northlands" Heroic
Updated several tooltips