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
Scholomance Acolyte(elite)57-58+Scholomance15Drop0.0%map
Scholomance Necromancer(elite)58-59+Scholomance15Drop0.0%map
Scalebane Lieutenant(elite)60-61+Wetlands7Drop0.0%map
Unstable Corpse58-59Scholomance21Drop0.0%map
Reanimated Corpse58-59Scholomance31Drop0.0%map
Wyrmkin Firebrand(elite)61-62+Wetlands11Drop0.0%map
Diseased Ghoul(elite)58-59+Scholomance34Drop0.0%map
Spectral Researcher(elite)58-60+Scholomance7Drop0.0%map
Fetid Zombie54-56Western Plaguelands3Drop0.0%map
Cobalt Whelp54-55Winterspring18Drop0.0%map
Cobalt Broodling55-56Winterspring22Drop0.0%map
Spell Eater54-56Winterspring11Drop0.0%map
Plagued Hatchling57-59Scholomance22Drop0.0%map
Rookery Hatcher(elite)58-59+0Drop0.0%map
Temporal Parasite55-570Drop0.0%map
High Chief Winterfall(elite)59+Winterspring1Drop0.0%map
Jabbering Ghoul54Western Plaguelands1Drop0.0%map
Chromatic Elite Guard(elite)59-60+Blackrock Spire2Drop0.0%map
Winterfall Runner57Winterspring4Drop0.0%map
Ice Giant(elite)50-51+0Drop0.0%map
Unliving Mossflayer54-55Eastern Plaguelands15Drop0.0%map
Gurubashi Axe Thrower(elite)60+Zul'Gurub31Drop0.0%map
Gurubashi Champion(elite)61+Zul'Gurub25Drop0.0%map
Soulflayer(elite)61+Zul'Gurub10Drop0.0%map
Zulian Cub60Zul'Gurub12Drop0.0%map
Bloodseeker Bat60Zul'Gurub42Drop0.0%map
Razzashi Broodwidow(elite)61+Zul'Gurub7Drop0.0%map
Razzashi Serpent(elite)60+Zul'Gurub35Drop0.0%map
Razzashi Adder(elite)60+Zul'Gurub29Drop0.0%map
Gordok Mauler(elite)53-54+Feralas37Drop0.0%map
Gordok Ogre-Mage(elite)52-53+Feralas104Drop0.0%map
Gordok Captain(elite)59-60+Dire Maul6Drop0.0%map
Gordok Reaver(elite)58-59+Dire Maul13Drop0.0%map
Wildspawn Satyr(elite)55-56+Dire Maul13Drop0.0%map
Wildspawn Betrayer(elite)55-56+Dire Maul7Drop0.0%map
Warpwood Treant(elite)54-55+Dire Maul7Drop0.0%map
Eldreth Apparition(elite)57-58+Dire Maul13Drop0.0%map
Eldreth Spirit(elite)57-58+Dire Maul17Drop0.0%map
Eldreth Spectre(elite)58-59+Dire Maul16Drop0.0%map
Rotting Highborne58-59Dire Maul17Drop0.0%map
Residual Monstrosity(elite)59-60+Dire Maul18Drop0.0%map
Risen Guardian59-610Drop0.0%map
Cavalier Durgen57Western Plaguelands1Drop0.0%map
Molten Giant(elite)62+Molten Core13Drop0.0%map
Molten Destroyer(elite)63+Molten Core9Drop0.0%map
Lava Annihilator(elite)61-62+Molten Core18Drop0.0%map
Firewalker(elite)61-62+Molten Core13Drop0.0%map
Flameguard(elite)61-62+Molten Core13Drop0.0%map
Firelord(elite)61-62+Molten Core18Drop0.0%map
Ancient Core Hound(elite)62+Molten Core15Drop0.0%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.