Where to Farm Plans: Thorium Helm

The best place to farm Plans: Thorium Helm is Silithus, where Whirling Invader (level 57-58) drops it at 0.1%. That is the vanilla 1.12 chance, not yet confirmed in Forever. 517 sources are ranked below by drop chance.

Gold per kill: Whirling Invader is worth about 8s 7c a kill in item drops (at Auction House prices). Gold farming spots, level 50-60

Best zones:

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  1. Lord Kazzak 35.6, 74.4
  2. Shadowsworn Adept 66.8, 30.5
  3. Helboar 51.8, 53.6
  4. Shadowsworn Dreadweaver 39.5, 31.4
  5. Shadowsworn Enforcer 39.5, 31.4
  6. Redstone Crystalhide 51.8, 53.6
  7. Dreadmaul Mauler 47.6, 43.0
  8. Dreadmaul Warlock 47.6, 43.0
8 sources in Blasted Lands, each where it spawns most often; click a pin for the source.Larger map

All sources, by drop chance:

SourceLevelZoneSpawnsSideHowDrop%Map
Watery Invader56-58Winterspring4Drop0.0%map
Razzashi Venombrood(elite)60+Zul'Gurub31Drop0.0%map
Gurubashi Bat Rider(elite)61+Zul'Gurub11Drop0.0%map
Razzashi Raptor(elite)60+Zul'Gurub32Drop0.0%map
Twilight Flamereaver60Silithus13Drop0.0%map
Crimson Templar(elite)60+0Drop0.0%map
Azure Templar(elite)60+0Drop0.0%map
Hoary Templar(elite)60+0Drop0.0%map
Twilight Overlord60-61Silithus24Drop0.0%map
Vekniss Soldier(elite)61+Ahn'Qiraj6Drop0.0%map
Vekniss Warrior(elite)61+Ahn'Qiraj6Drop0.0%map
Vekniss Guardian(elite)61+Ahn'Qiraj35Drop0.0%map
Vekniss Wasp(elite)60+Ahn'Qiraj18Drop0.0%map
Qiraji Brainwasher(elite)61+Ahn'Qiraj6Drop0.0%map
Qiraji Lasher(elite)61+Ahn'Qiraj5Drop0.0%map
Obsidian Eradicator(elite)60+Ahn'Qiraj3Drop0.0%map
Anubisath Sentinel(elite)61+Ahn'Qiraj8Drop0.0%map
Earthen Templar(elite)60+0Drop0.0%map
Hive'Zara Sandstalker(elite)61+Ruins of Ahn'Qiraj8Drop0.0%map
Hive'Zara Wasp(elite)61+Ruins of Ahn'Qiraj31Drop0.0%map
Hive'Zara Stinger(elite)61+Ruins of Ahn'Qiraj19Drop0.0%map
Silicate Feeder55Ruins of Ahn'Qiraj37Drop0.0%map
Qiraji Swarmguard(elite)61+Ruins of Ahn'Qiraj5Drop0.0%map
Captain Tuubid(elite)63+Ruins of Ahn'Qiraj1Drop0.0%map
Naxxramas Acolyte(elite)61+Naxxramas24Drop0.0%map
Skeletal Flayer50-51Western Plaguelands67Drop0.0%map
Skeletal Sorcerer51-52Western Plaguelands32Drop0.0%map
Skeletal Executioner54-55Western Plaguelands94Drop0.0%map
Skeletal Acolyte55-56Western Plaguelands97Drop0.0%map
Slavering Ghoul50-52Western Plaguelands53Drop0.0%map
Rotting Ghoul54-55Western Plaguelands26Drop0.0%map
Soulless Ghoul54-55Western Plaguelands82Drop0.0%map
Searing Ghoul55-56Western Plaguelands86Drop0.0%map
Hungering Wraith56-58Western Plaguelands62Drop0.0%map
Wailing Death56-57Western Plaguelands62Drop0.0%map
Vile Slime54-55Western Plaguelands13Drop0.0%map
Rotting Behemoth55-56Western Plaguelands39Drop0.0%map
Decaying Horror56-57Western Plaguelands26Drop0.0%map
Diseased Black Bear51-52Western Plaguelands49Drop0.0%map
Venom Mist Lurker50-51Western Plaguelands49Drop0.0%map
Scarlet Mage55-56Western Plaguelands18Drop0.0%map
Scarlet Sentinel(elite)55-56+Western Plaguelands24Drop0.0%map
Scarlet Magus(elite)56-57+Western Plaguelands9Drop0.0%map
Scarlet Paladin(elite)55-56+Western Plaguelands37Drop0.0%map
Scarlet Invoker53-54Western Plaguelands29Drop0.0%map
Scarlet Worker55-57Western Plaguelands56Drop0.0%map
Scarlet Lumberjack54-56Western Plaguelands25Drop0.0%map
Vilebranch Aman'zasi Guard(elite)50-51+The Hinterlands28Drop0.0%map
Vilebranch Raiding Wolf(elite)50-51+The Hinterlands11Drop0.0%map
Haunting Vision57-58Western Plaguelands62Drop0.0%map
517 found
Classic data: from the patch 1.12 world data, not yet confirmed in Forever.

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Drop% is the rate recorded in Forever once a source has been looted ten times; a greyed figure is the vanilla 1.12 chance from the world data (classic data: from the patch 1.12 world data, not yet confirmed in forever). Spawns counts the source's spawn points in the world data. "Side" names which side can kill the NPC when the other finds it friendly. The lead picks the best chance among sources that are not a rare spawn and have at least three spawn points.