https://www.wowhead.com/blue-tracker/topic/eu/class-tuning-incoming-6-december-480793
As we continue to closely monitor data on class performance as well as player feedback, we’ve developed the following adjustments to classes that are over- and under-performing in group content and PvP. These changes will go into effect with scheduled weekly maintenance in each region.
Classes
Death Knight
Blood
Aberrus Class Set bonus: Heart Strike and Blood Boil deal 10% increased damage (was 20%) and have a 5% chance (was 10%) to grant Vampiric Blood for 5 seconds.
Unholy
Virulent Plague Damage increased by 15%. Not applied to PvP combat.
Epidemic Damage increased by 12%.
Festering Strike damage increased by 20%.
Festering Wound damage increased by 12%. Not applied to PvP combat.
Ghoul – Sweeping Claws damage increased by 15%.
Demon Hunter
Havoc
Fel Rush damage reduced by 12%.
Immolation Aura damage reduced by 12%.
Fel Barrage damage reduced by 12%.
Fixed an issue when talented into A Fire Inside that caused any cast of Immolation Aura beyond the first to not enforce its intended GCD.
Druid
Restoration
Ferocious Bite damage decreased by 20%. Not applied to PvP combat.
Rip damage decreased by 15%. Not applied to PvP combat.
Rake damage decreased by 10%.
Shred damage decreased by 10%.
Evoker
Devastation
All damage spells increased by 5%.
Regenerative Magic increases leech by 5% for Devastation only (was 3%).
Draconic Legacy increases stamina by 8% for Devastation only (was 6%).
Hunter
Beast Mastery
Amirdrassil, the Dream’s Hope 4-piece set bonus
Dire Beast’s Kill Command damage reduced by 30%.
Beast Cleave gained by Dire Beast effectiveness reduced by 30%.
Monk
Mistweaver
Mana Tea now reduces the mana cost of spells by 25% (was 50%).
Upwelling can now stack up to 15 times (was 18).
Essence Font healing decreased by 10%.
Invigorating Mist healing decreased by 10%.
Calming Coalescence now increases the absorb amount of Life Cocoon by 2% per stack (was 3%).
Vivify primary healing increased by 5%.
Ancient Concordance now increases the chance for Blackout Kick to reset Rising Sun Kick by 12% (was 10%).
Windwalker
All ability damage increased by 6%.
Paladin
Holy
Crusader Strike now costs 0.6% base mana (was 1.6%) and deals 25% increased damage.
Hammer of Wrath now costs 0.6% base mana (was 1%) and deals 20% increased damage.
Priest
Discipline
All healing reduced by 3%.
All damage reduced by 3%.
Holy
All healing increased by 4%.
Burning Vehemence now causes Holy Fire to deal 75% of its initial damage to nearby enemies (was 60%).
Amirdrassil 2-piece set bonus: Renews caused by Serenity now last 18 seconds (was 14 seconds) and Renews caused by Sanctify now last 6 seconds (was 5 seconds).
Rogue
Assassination
Kingsbane damage reduced by 15%.
Blindside effect chance reduced to 15% (was 20%) and 30% against low-health targets (was 40%).
Shaman
Restoration
Healing Surge now costs 4.4% base mana (was 4.8%).
Chain Lightning damage increased by 20%.
Acid Rain damage increased by 10%.
Player versus Player
Death Knight
Unholy
Rotten Touch’s effectiveness reduced by 40% in PvP combat.
Druid
Restoration
Amirdrassil 4 set bonus now casts Nourish at 50% effectiveness (was 100%) in PvP combat.
Mastery: Harmony is now reduced by 15% in PvP combat.
Hunter
Marksmanship
Survival of the Fittest now reduces damage taken by an additional 10% in PvP combat.
Exhilaration now heals for 40% of max health (was 30%) in PvP combat.
Monk
Fixed an issue that caused Fortifying Brew’s damage reduction to be higher than intended in PvP combat.
Mistweaver
Amirdrassil 2 set bonus: Chi Harmony now increases healing received by 15% (was 25%) in PvP combat.
Healing Elixir now heals for 10% of maximum health (was 20%) in PvP combat.
Yu’lon’s Grace now creates an absorb for 1% of your maximum health (was 2%) in PvP combat.
Dampen Harm’s minimum damage reduction is no longer increased in PvP combat (was 25%).
Fortifying Brew’s damage reduction is no longer increased in PvP combat (was 30%).
Diffuse Magic now reduces magic damage taken by 40% (was 60%).
Priest
Discipline
Amirdrassil 4 set bonus: Now has a 100% chance to cast another Smite (was 50%) in PvP combat.
Shaman
Enhancement
Thorim’s Invocation now increases Lightning Bolt and Chain Lightning damage by 10% in PvP Combat (was 20%).
Lava Lash damage is now increased by 25% in PvP combat (was 12%).
Elemental Blast damage is now reduced by 6% in PvP combat (was 15%).
Stormweaver now causes Chain Heal and Healing Surge to gain 150% of the benefits of Maelstrom Weapon based on the stacks consumed (was 100%).
Elemental
Lava Burst damage from the the Amirdrassil 4-piece set bonus is now reduced by 40% in PvP combat (was 50%).
Restoration
Amirdrassil 2 set bonus: Effectiveness no longer reduced in PvP combat (was reduced by 50%).
Rogue
Subtlety
Shadow Blades extra Shadow damage reduced to 15% (base 20%) in PvP combat
Thief’s Bargain (PvP Talent) cooldown reduction value reduced to 20% (was 33%)
Warlock
Demonology
Fel Obelisk (PvP Talent) now increases attack and cast speed by 10% (was 20%).
Master Summoner (PvP Talent) reduces the cast time of Call Dreadstalkers, Summon Vilefiend, and Summon Demonic Tyrant by 15% (was 20%).
Antoran Armaments now increases your Felguards damage by 10% (was 20%) in PvP Combat.
Doom Brand from the Amirdrassil 2-piece set bonus is now undispellable.
The debuff duration reduction for Doom Brand from the Amirdrassil 2-piece set bonus is no longer reduced in PvP combat.
Damage effects from the Amirdrassil 2-piece and 4-piece set bonus are now reduced by 40% in PvP combat (was 50%).
Destruction
Flame Rift damage from the Amirdrassil 4-piece set bonus is no longer reduced in PvP combat (was 50%).
Warrior
Fury
Rampage now deals 40% additional damage in PvP (was 30%).
Execute now deals 50% additional damage in PvP (was 40%).
Crushing Blow no longer deals reduced damage in PvP (was 20%).
Raging Blow deals 15% additional damage in PvP.
Annihilator deals 15% additional damage in PvP.