Where to Farm Mercurial Breastplate

The best place to farm Mercurial Breastplate is Silithus, where Twilight Overlord (level 60-61) drops it at 0.0%. That is the vanilla 1.12 chance, not yet confirmed in Forever. 182 sources are ranked below by drop chance.

Gold per kill: Twilight Overlord is worth about 82s 42c a kill in item drops (prices from 10 Oct 2026).

Best zones:

The 15 zones with the best source; every source is listed below.

Zone	Sources	Best source	Level	Drop% ▼
Azshara	1	Azuregos	63+	2.2%
Onyxia's Lair	2	Onyxia	63+	2.2%
Western Plaguelands	7	Scarlet High Clerist	63+	2.2%
Duskwood	1	Emeriss	63+	0.0%
Feralas	9	Lethon	63+	0.0%
Ashenvale	5	Taerar	63+	0.0%
The Hinterlands	5	Ysondre	63+	0.0%
Naxxramas	28	Plagued Ghoul	61+	0.0%
Blasted Lands	3	Felguard Elite	61+	0.0%
Ahn'Qiraj	14	Vekniss Guardian	61+	0.0%
Zul'Gurub	13	Hakkari Priest	60+	0.0%
Silithus	6	Hive'Regal Hive Lord	59-61+	0.0%
Ruins of Ahn'Qiraj	16	Hive'Zara Wasp	61+	0.0%
Blackwing Lair	9	Death Talon Overseer	62+	0.0%
Molten Core	13	Firelord	61-62+	0.0%

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All sources, by drop chance:

Classic data: from the patch 1.12 world data, not yet confirmed in Forever.

Source	Level	Zone	Spawns	Side	How	Drop% ▼	Map
Azuregos(elite)	63+	Azshara	1		Drop	2.2%	map
Onyxia(elite)	63+	Onyxia's Lair	1		Drop	2.2%	map
Scarlet High Clerist(rare)	63+	Western Plaguelands	1		Drop	2.2%	map
Emeriss(elite)	63+	Duskwood	1		Drop	0.0%	map
Lethon(elite)	63+	Feralas	1		Drop	0.0%	map
Taerar(elite)	63+	Ashenvale	1		Drop	0.0%	map
Ysondre(elite)	63+	The Hinterlands	1		Drop	0.0%	map
Plagued Ghoul(elite)	61+	Naxxramas	150		Drop	0.0%	map
Jademir Boughguard(elite)	62+	Feralas	60		Drop	0.0%	map
Jademir Oracle(elite)	61+	Feralas	60		Drop	0.0%	map
Felguard Elite(elite)	61+	Blasted Lands	51		Drop	0.0%	map
Necropolis Acolyte(elite)	62+	Naxxramas	48		Drop	0.0%	map
Verdantine Boughguard(elite)	62+	The Hinterlands	44		Drop	0.0%	map
Verdantine Oracle(elite)	61+	The Hinterlands	44		Drop	0.0%	map
Vekniss Guardian(elite)	61+	Ahn'Qiraj	35		Drop	0.0%	map
Hakkari Priest(elite)	60+	Zul'Gurub	34		Drop	0.0%	map
Hive'Regal Hive Lord(elite)	59-61+	Silithus	34		Drop	0.0%	map
Hive'Zara Wasp(elite)	61+	Ruins of Ahn'Qiraj	31		Drop	0.0%	map
Colossal Anubisath Warbringer(elite)	61-62+	Silithus	26		Drop	0.0%	map
Gurubashi Champion(elite)	61+	Zul'Gurub	25		Drop	0.0%	map
Naxxramas Acolyte(elite)	61+	Naxxramas	24		Drop	0.0%	map
Naxxramas Cultist(elite)	61+	Naxxramas	24		Drop	0.0%	map
Carrion Spinner(elite)	61+	Naxxramas	21		Drop	0.0%	map
Emeraldon Boughguard(elite)	62+	Ashenvale	21		Drop	0.0%	map
Emeraldon Oracle(elite)	61+	Ashenvale	21		Drop	0.0%	map
Mad Scientist(elite)	61+	Naxxramas	20		Drop	0.0%	map
Hive'Zara Stinger(elite)	61+	Ruins of Ahn'Qiraj	19		Drop	0.0%	map
Death Talon Overseer(elite)	62+	Blackwing Lair	18		Drop	0.0%	map
Firelord(elite)	61-62+	Molten Core	18		Drop	0.0%	map
Gurubashi Berserker(elite)	62+	Zul'Gurub	18		Drop	0.0%	map
Lava Annihilator(elite)	61-62+	Molten Core	18		Drop	0.0%	map
Qiraji Mindslayer(elite)	61+	Ahn'Qiraj	18		Drop	0.0%	map
Blackhand Elite(elite)	60-61+	Blackrock Spire	17		Drop	0.0%	map
Blackhand Iron Guard(elite)	60-61+	Blackrock Spire	17		Drop	0.0%	map
Doomguard Commander(elite)	61+	Blasted Lands	17		Drop	0.0%	map
Scalebane Royal Guard(elite)	61-62+	Wetlands	17		Drop	0.0%	map
Thuzadin Necromancer(elite)	60-61+	Stratholme	17		Drop	0.0%	map
Patchwork Golem(elite)	61+	Naxxramas	16		Drop	0.0%	map
Ancient Core Hound(elite)	62+	Molten Core	15		Drop	0.0%	map
Spirit of Naxxramas(elite)	61+	Naxxramas	15		Drop	0.0%	map
Blackwing Warlock(elite)	61+	Blackwing Lair	14		Drop	0.0%	map
Deathknight Captain(elite)	61+	Naxxramas	14		Drop	0.0%	map
Dread Creeper(elite)	61+	Naxxramas	14		Drop	0.0%	map
Hakkari Shadow Hunter(elite)	61+	Zul'Gurub	14		Drop	0.0%	map
Lava Elemental(elite)	61-62+	Molten Core	14		Drop	0.0%	map
Mad Servant(elite)	61+	Zul'Gurub	14		Drop	0.0%	map
Qiraji Slayer(elite)	61+	Ahn'Qiraj	14		Drop	0.0%	map
Firewalker(elite)	61-62+	Molten Core	13		Drop	0.0%	map
Flameguard(elite)	61-62+	Molten Core	13		Drop	0.0%	map
Molten Giant(elite)	62+	Molten Core	13		Drop	0.0%	map
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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.