The tier-10 set bonuses have recently been released on the PTR and we would like to get your feedback on each of them. The items will soon be available on the PTR for additional testing, but we welcome your initial impressions and theory crafting thoughts as well.

To properly organize feedback, please format responses as:

[CLASS]:[SPEC]
2 piece – [Feedback]
4 piece – [Feedback]

Here is a list of the current planned set bonuses for DPS roles:

Death Knight

• 2 piece bonus - Your Obliterate and Scourge Strike abilities deal 10% increased damage., and your Heart Strike ability deals 7% increased damage.
  
• 4 piece bonus - Whenever all your runes are on cooldown, you gain 3% increased damage done with weapons, spells, and abilities for the next 15 second.

Druid - Balance

• 2 piece bonus - When you gain Clearcasting from your Omen of Clarity talent, you deal 15% additional Nature and Arcane damage for 6 seconds.
  
• 4 piece bonus - Your critical strikes from Starfire and Wrath cause the target languish for an additional 5% of your spell's damage over 4 seconds.

Druid - Feral

• 2 piece bonus - Your Swipe (Bear) and Lacerate abilities deal 20% additional damage and the cost of your Rip ability is reduced by 10 energy.
  
• 4 piece bonus - Your Enrage ability no longer decreases your armor and instead decreases all damage taken by 12%, and the periodic damage done by your Rake ability can now be a critical strike.

Hunter

• 2 piece bonus - Your Auto Shots have a 5% chance to cause you and your pet to deal 15% additional damage for until cancelled.
  
• 4 piece bonus - When your Viper Sting, Serpent Sting, and Wyvern Sting abilities deal damage, you have a 5% chance to gain 20% attack power for 10 seconds.

Mage

• 2 piece bonus - Your Hot Streak, Missile Barrage, and Brain Freeze talents also grant you 12% haste for 5 seconds when the effect of the talent is consumed.
  
• 4 piece bonus - Your Mirror Image ability also causes you to deal 18% additional damage for 30 seconds.

Paladin

• 2 piece bonus - Your melee attacks have a 40% chance to reset the cooldown on your Divine Storm ability.
  
• 4 piece bonus - Your Seals and Judgements deal 10% additional damage.

Priest

• 2 piece bonus - The critical strike chance of your Shadow Word: Pain, Devouring Plague, and Vampiric Touch spells is increased by 5%.
  
• 4 piece bonus - Reduces the channel duration and period of your Mind Flay spell by 0.5 seconds.

Rogue

• 2 piece bonus - Your Tricks of the Trade ability now grants you 15 energy instead of costing energy.
  
• 4 piece bonus - Gives your melee finishing moves a 13% chance to add 3 combo points to your target.

Shaman – Elemental

• 2 piece bonus - Your Lightning Bolt spell reduces the remaining cooldown on your Elemental Mastery talent by 1 second.
  
• 4 piece bonus - The cooldown on your Lava Burst ability is reduced by 1.5 seconds.

Shaman – Enhancement

• 2 piece bonus - When you activate your Shamanistic Rage ability you also deal 12% additional damage for 15 second.
  
• 4 piece bonus - Each time the beneficial effect of your Maelstrom Weapon talent reaches 5 charges, you have a 15% chance to gain 20% attack power for 10 second.

Warlock

• 2 piece bonus - The critical strike chance of your Shadowbolt, Incinerate, Soulfire, and Corruption spells is increased by 5%.
  
• 4 piece bonus - Each time your Immolate and Unstable Affliction spells deal periodic damage, you have a 15% chance to gain 10% damage done by you and your pet for 10 seconds.

Warrior

• 2 piece bonus - When your Deep Wounds ability deals damage you have a 3% chance to gain 20% attack power for 10 seconds.
  
• 4 piece bonus - You have a 30% chance for your Bloodsurge and Sudden Death talents to grant 2 charges of their effect instead of 1, reduce the global cooldown on Execute or Slam by 0.5 seconds, and for the duration of the effect to be increased by 100%.

We have made some updates to the sets in the number values so keep an eye out for them and continue to give us your feedback.

Update:
Mage 2 piece bonus – Hot Streak, Missile Barrage and Brain Freeze grant 12% haste for 5 sec.
Mage 4 piece bonus – Mirror Image is 30 sec and damage bonus is 18%.

Warrior 2 piece bonus - 2 piece bonus - When your Rend and Deep Wounds abilities deal damage you have a 2% chance to gain 20% attack power for 10 seconds.

Another update:

Druid - Balance
4 piece bonus - Your critical strikes from Starfire and Wrath cause the target languish for an additional 5% of your spell's damage over 4 seconds.

Who is ready for some more updates?

We have been watching players' feedback and discussing the set bonuses and making changes throughout the day. It could be swapping the bonuses, altering the numbers, or reworking the bonuses but here are the latest changes:

Hunter

• 4 piece bonus - When your Viper Sting, Serpent Sting, and Wyvern Sting abilities deal damage, you have a 5% chance to gain 20% attack power for 10 seconds.

Mage

• 2 piece bonus - Your Hot Streak, Missile Barrage, and Brain Freeze talents also grant you 12% haste for 5 seconds when the effect of the talent is consumed.
  
• 4 piece bonus - Your Mirror Image ability also causes you to deal 18% additional damage for 30 seconds.

Paladin

• 2 piece bonus - Your melee attacks have a 40% chance to reset the cooldown on your Divine Storm ability.
  
• 4 piece bonus - Your Seals and Judgements deal 10% additional damage.

Priest

• 2 piece bonus - The critical strike chance of your Shadow Word: Pain, Devouring Plague, and Vampiric Touch spells is increased by 5%.
  
• 4 piece bonus - Reduces the channel duration and period of your Mind Flay spell by 0.5 seconds.

Rogue

• 2 piece bonus - Your Tricks of the Trade ability now grants you 15 energy instead of costing energy.
  
• 4 piece bonus - Gives your melee finishing moves a 13% chance to add 3 combo points to your target.

Warrior

• 2 piece bonus - When your Rend and Deep Wounds abilities deal damage you have a 2% chance to gain 20% attack power for 10 seconds.
  
• 4 piece bonus - You have a 20% chance for your Blood Surge and Sudden Death talents to grant 2 charges of their effect instead of 1 and for the duration of the effect to be increased by 100%.

And another round of updates. Changes are bolded in this post for reference. :)

Death Knight

• 2 piece bonus - Your Obliterate and Scourge Strike abilities deal 10% increased damage., and your Heart Strike ability deals 7% increased damage.
  
• 4 piece bonus - Whenever all your runes are on cooldown, you gain 3% increased damage done with weapons, spells, and abilities for the next 15 second.

Druid - Balance

• 2 piece bonus - When you gain Clearcasting from your Omen of Clarity talent, you deal 15% additional Nature and Arcane damage for 6 seconds.
  
• 4 piece bonus - Your critical strikes from Starfire and Wrath cause the target languish for an additional 5% of your spell's damage over 4 seconds.

Warlock

• 2 piece bonus - The critical strike chance of your Shadowbolt, Incinerate, Soulfire, and Corruption spells is increased by 5%.
  
• 4 piece bonus - Each time your Immolate and Unstable Affliction spells deal periodic damage, you have a 15% chance to gain 10% damage done by you and your pet for 10 seconds.

Warrior

• 2 piece bonus - When your Deep Wounds ability deals damage you have a 3% chance to gain 20% attack power for 10 seconds.
  
• 4 piece bonus - You have a 30% chance for your Bloodsurge and Sudden Death talents to grant 2 charges of their effect instead of 1, reduce the global cooldown on Execute or Slam by 0.5 seconds, and for the duration of the effect to be increased by 100%.