Harvester of Sorrow

Inside the Theater of Pain in Maldraxxus (not inside the dungeon) you'll find the Sword Sorrowbane stuck in the ground and [object=335655] attached to it. Both of them are clickable objects so try to grab them! Too weak? Then obviously you'll need to buff your strength!

TomTom:
/way Maldraxxus 51.42 48.47 Sorrowbane

Acquisition:

1. Do the prequests to unlock [npc=166640]'s vendor option, buy a [item=180771] and keep it in your bags.
2. 
   
3. Buy a [item=182163] from [npc=171808] in Revendreth and keep it in your bags.
4. 
   
5. Make sure World Quest A Few Bumps Along the Way is active and you have plenty of time to complete it.
6. 
   
7. Buy a [item=181163] from [npc=169964] for 10 Gold or keep your [item=6948] off cooldown and bind it to the Innkeeper close to Theater of Pain (maybe check the location of Sword & Arm inside the arena if you haven't seen it before)
8. 
   
9. Complete 2x ballista repairs for the WQ without losing the first buff (10min real-time, so do not log out) to get 2x [spell=306272] (second stack will refresh timer).
10. 
    
11. Head to Glutharn's Decay at far east of Maldraxxus.
12. 
    
13. Click 4x [spell=327367]s, then instantly use your [item=181163] or hearth back to Theater of Pain.
14. 
    
15. Hurry up (80% slow) to get to [object=335655] within 2min (maybe you wanna use a Goblin Glider Kit on top of the stairs when using the Hearthstone).
16. 
    
17. Use your [item=182163] and [item=180771] now.
18. 
    
19. Within 25sec click [object=335655] for [item=181164] and Sorrowbane to receive [item=180273] and Harvester of Sorrow achievement. Congrats!

TomTom:
/way #1536 51.42 48.47 Oonar's Arm
/way #1525 53.14 41.31 Teleport Scroll Vendor
/way #1536 53.63 47.93 Unusual Strength Potion
/way #1536 37 47 Battle Hardened
/way #1536 76.44 56.72 Edible Redcaps
/way #1525 51.16 78.75 Strength of Blood Vendor

/way #1536 59.73 73.02 Explosive Strength Vial

Buffs:

There are several buffs and their combinations that affect the text messages for pulling the Sword:

• [spell=306272] (10min, stacking up to 3x)
• 
  
• [spell=327367] (2min, stacking up to 4x)
• 
  
• [spell=333791] (2min)
• 
  
• [spell=334436] (25sec)
• 
  
• [spell=338385] (1min)

Sources of Buffs:

• Looks like [spell=306272] is only available when A Few Bumps Along the Way is active in Maldraxxus' "The Spearhead" area. You have to defend damaged artillery by defeating NPCs close to it (filling up a progress bar) and get this buff when a ballista's repair is finished. (The WQ is completed when 2 ballistas are repaired and I don't think it's possible to help on another repair, so not sure why it can stack up to 3x.)
  
  
• 
  
• [spell=327367]s are small mushroom objects you can click. You can have up to 4x stacks of this buff active but keep in mind that each stack also applies a 20% slow. The only ones I found are in Glutharn's Decay in the eastern part of Maldraxxus together with [spell=327352]. This shroom area is also the location of the Rare Spawn [npc=162711] (source of [item=181263] battle pet).
  I had to bind my Hearthstone to the Innkeeper near Theater of Pain or use [item=181163] to get to Sorrowbane within the 2min buff duration.
  
  
• 
  
• [spell=333791] is the effect of a clickable vial on a table in House of Plagues area in Maldraxxus. For combining buffs I don't think it's a valuable option. I am playing a Shaman and had to click the Redcaps, hearth back to Theater, fly to Plague Watch, click the vial and Astral Recall back to Theater. Even with the now doubled duration I can only think of Shaman, Vulpera (Make Camp/Return to Camp) or Warlock teleports being able to move that much within 2min, so not a match for an item you can carry until you want to use it. And there's another problem... you don't know if someone else clicked the vial and triggered the ~5min respawn timer.
  
  
• 
  
• [spell=334436] is the effect of [item=180771] that is sold for 1 Gold by [npc=166640] in Maldraxxus (outside of the eastern Theater of Pain walls). You'll need to do some quests close to his position to unlock the vendor option.
  
  
• 
  
• [spell=338385] is the effect of [item=182163]. You can get them from [npc=171808] in exchange for a specific amount of a Shadowlands crafting reagent (changing weekly) at the Night Market in Revendreth.

Progress seen when pulling and how to get there...

Spoiler

"You lack the strength to move it."

• without buffs

"You need greater strength to succeed."

• 1x [spell=327367]
• [spell=333791]
• [spell=334436]

"You have a strong grip, but it did not move."

• 2x [spell=327367]
• 1x [spell=327367] + [spell=334436] combined
• 1x [spell=327367] + [spell=333791] combined
• 1x [spell=327367] + [spell=338385] combined

"You brace and pull, but are still too weak."

• 3x [spell=327367]
• 2x [spell=327367] + [spell=334436] combined

"A strong effort, but you failed to move it."

• 4x [spell=327367]
• 3x [spell=327367] + [spell=334436] combined
• 3x [spell=327367] + 1x [spell=306272] combined

"The metal squelches and vibrates in resistance."

• 4x [spell=327367] + [spell=334436] combined
• 4x [spell=327367] + 1x [spell=306272] combined
• 3x [spell=327367] + 1x [spell=306272] + [spell=334436] combined

"The ground cracks and chips from your efforts."

• 4x [spell=327367] + 1x [spell=306272] + [spell=334436] combined
• 4x [spell=327367] + 2x [spell=306272] combined

"The sword moves a tiny bit."

• 4x [spell=327367] + 2x [spell=306272] + [spell=334436] combined

Receive [item=180273] and Harvester of Sorrow achievement

• 4x [spell=327367] + 2x [spell=306272] + [spell=334436] + [spell=338385] combined

List is not complete

To earn Harvester of Sorrow and obtain [item=180273] you have to combine several buffs.
[item=180273] can be found in Theater of Pain at 51.42 48.47 coordinates. It looks like a big sword stucked in the ground.
Unfortunatelly you can just pull of out. you arent strong enough ("You lack the strength to move it." message will be shown). So, you need to prepare.
Obtaining [item=180273] is also required for Treasures of Maldraxxus achievement.

• 
  
• Step 1: Buy two potions:
  
  1. 
     
  2. [item=180771] - sold by [npc=166640], Maldraxxus, coordinates are 51.34 48.57. Price is 1 gold. Complete shorth prequest around there to unlock him.
  3. 
     
  4. [item=182163] - sold by [npc=171808], Revendreth, coordinates are 51.00 78.62. Price changes every week. For me was 20 Laestrite Ore
  5. 
     
     
• 
  
• ===============================================================================================================
• 
  
• Step 2: Wait until A Few Bumps Along the Way world quest appears. Malrdaxxus, around 40.96 50.22 coordinates.
• 
  
• ===============================================================================================================
• 
  
• Step 3: The day when A Few Bumps Along the Way is up:
  
  1. 
     
     
  2. Set you hearthstone to The Theater of Pain - speak to [npc=161702] at 50.92 53.09 coordinates (or buy [item=181163] either).
  3. 
     
  4. Complete A Few Bumps Along the Way, you will get 2 stacks of [spell=306272].
  5. 
     
  6. Mount up and make you way to 76.79 56.89 - Glutharn's Decay, there you need to click to 4 [spell=327367]. BEWARE of [npc=162711] rare mob.
  7. 
     
  8. After consumong 4 [spell=327367] (you must have [spell=306272] x2 and [spell=327367] x4) use your [item=6948] and immediately run down the Theater of Pain stairs to the Sorrowbane.
  9. 
     
  10. Get to the sword and drink both [item=182163] and [item=180771]. DRINK [item=182163] FIRST! It lasts longer!
  11. 
      
  12. So, while you have all buffs - [spell=306272] x2 +[spell=327367] x4 + [item=182163] + [item=180771] - pull out the sword. Harvester of Sorrow is yours!
  13. 
      
  
  
• 
  

Few hints:

• 
  
• You cant carry more than one of each [item=182163] and [item=180771] so you need to be sure you use them in the proper time.
• 
  
• When you are gonna to consume [spell=327367] - be sure [npc=162711] rare mob will not disturb you. Consuming [spell=327367] decreases your moving speed and rare cast explosive mushrooms. You may not to avoid them while slowed so you die and fail the achievement.
• 
  
• Bring Goblin Glider Kit and use it to fly down over the stairs in The Theater of Pain. This may help you to save few seconds.
• 
  
• If there's a fight on the Theater of Pain you MUST BE CAREFUL. Dont use potions until you are next to the sword and able to touch it. If someone fights [npc=162853] it will surely engage you into the fight so you have to be sure you will not be thrown away, stunned or charged while pulling the sword out. If [npc=162853] charges you while you are slowed and can run off its aoe, well, your are dead. Well, its actually a bit of luck requires.
• 
  
• There is also [object=335655] nearby, you can pull it out as well to get [item=181164].
• 
  
• Obtaining [item=180273] is also required for Treasures of Maldraxxus achievement.
• 
  

TomTom coordiates:

/way 50.92 53.09 Set your HS
/way 51.34 48.57 Potion of Unusual Strength
/way 51.00 78.62 Strength of Blood (Revendreth)
/way 76.79 56.89 Edible Redcaps
/way 51.42 48.47 Sorrowbane + Oonar's Arm

Harvester of Sorrow achievement video - https://youtu.be/EAq9FtgYbLs

[item=180273] (ilvl 180 at level 60) is a sword stuck in the ground inside the open world Theater of pain Arena in Maldraxxus.
You can't pick it up and each time you use it, you hear: "You lack the strength to move it."
To be able to loot the treasure you need to get several buffs

1. 
   
   
2. Buy 2 potions, don't use them yet
   
   • 
     
     
   • [item=182163] from [npc=171808] vendor in Revendreth, north of the Wanecrypt Hill windrider
     Price: 30xRaw Seraphic Wing or 10xWidowbloom or similar random crafting material, changes each week
   • 
     
   • [item=180771] (1g) from [npc=166640] vendor in Maldraxxus, (unlocked after Side Effects Theater of pain questchain)
     
     
   • 
     
3. 
   
   
4. WAIT FOR A Few Bumps Along the Way WORLD QUEST (west of Theater of Pain in Maldraxxus)
   
5. 1. 
      
   2. Bind you [item=6948] to Slumbar Valorum Theater of Pain windrider in Maldraxxus
      Or buy [item=181163] from [npc=169964] that can teleport you near the sword
   3. 
      
   4. Complete A Few Bumps Along the Way world quest (completion of the quest gives 2 stacks of [spell=306272] duration 10 minutes )
   5. 
      
   6. Run to the [npc=162711] rare area and eat mushrooms on the ground
      Get 4 stacks of [spell=327367] (duration 2 mins and they will slow you down by 80%)
      
   7. 
      
      
   8. Use [item=6948] + Goblin Glider Kit near the stairs to get down faster
      Or [item=181163] that teleports you 10-feet away from the sword
   9. 
      
   10. Run to the [object=335649] in the south-east side of the open world Theater of Pain
   11. 
       
   12. When near the Sorrowbane use [item=182163] and [item=180771] and loot the sword
   13. 
       
   
   

/way 50.94 53.19 Bind HS
/way Revendreth 51.10 78.85 Buy Strength of Blood - Ta'tru
/way 53.66 47.86 Buy Potion of Unusual Strength - Au'larrynar
/way 38.84 49.21 A Few Bumps... world quest
/way 76.73 56.12 Eat 4xEdible Redcap
/way 51.29 48.58 Sorrowbane

How to get [item=180273] and Harvester of Sorrow: https://www.youtube.com/watch?v=FC9f3pKkjxk
[item=181164] requires only 4 stacks of [spell=327367]: https://youtu.be/hIwviznPP8g

• 
  
• To get [item=181164] you need only 4x [spell=327367]
• 
  
• To get the [item=180273] and Harvester of Sorrow you need:
  1x [item=182163], 1x [item=180771], 2x [spell=306272], 4x [spell=327367]
• 
  
• Related to the Sword of Oonar Treasures of Maldraxxus and the Harvester of Sorrow
• 
  
• Discovered by Lazey
• 
  

PS: WARNING Most people reported to me that the hard/ruining part is to find 4x [spell=327367] because the area is usually crowded and because [spell=306272] timer is kinda shot it leads to failing the progress. So keep that in mind and try to do this not in prime time.