Plans: Heavy Mithril Helm

Dropped by 40+

• Grimungous level 50 2% 8215
• Shore Strider level 49 0.4% 5359
• Zapped Cliff Giant level 49 0.3% 14640
• Omgorn the Lost level 50 0.3% 8201
• Mok'rash level 50 0.2% 1493
• Dark Keeper Uggel level 55 0.2% 9439
• Arash-ethis level 49 0.2% 5349
• Mai'Zoth level 47 0.2% 818
• Myzrael level 44 0.2% 2755
• Treasure Hunting Pirate level 45 0.1% 7899
• Atal'ai Corpse Eater level 50 0.1% 5270
• Celebrian Dryad level 46 0.1% 11793
• Dark Guard level 54 0.1% 9445
• Noxxious Scion level 46 0.1% 13696
• Deep Stinger level 52 0.1% 8926
• Hammered Patron level 52 0.1% 9554
• Hematus level 50 0.1% 2759
• Mogh the Undying level 44 0.1% 1060
• Murk Worm level 48 0.1% 5226
• Sister of Celebrian level 47 0.1% 11794
• Subterranean Diemetradon level 48 0.1% 13323
• Twilight Idolater level 51 0.1% 8419
• Unliving Atal'ai level 49 0.1% 5267
• Spirestone Mystic level 56 0.1% 9198
• Treasure Hunting Buccaneer level 45 0.1% 7902
• Veng level 47 0.1% 13738
• Stone Keeper level 46 0% 4857
• Centipaar Swarmer level 50 0% 5457
• Primordial Behemoth level 49 0% 12206
• Ruuzlu level 46 0% 7797
• Sandfury Ritualist level 46 0% 62500
• Sul'lithuz Abomination level 47 0% 8120
• Sul'lithuz Sandcrawler level 47 0% 8095
• Twilight's Hammer Torturer level 51 0% 8912
• Vilebranch Berserker level 48 0% 2643
• Vilebranch Blood Drinker level 50 0% 2646
• Vilebranch Headhunter level 47 0% 2641
• Vilebranch Shadow Hunter level 49 0% 2645
• Vilebranch Soul Eater level 50 0% 2647
• Zapped Shore Strider level 49 0% 14603

Only the first 40 are listed.

Dropped by, from a shared table 40+

• Ancient of Wisdom level 59 62814
• Avranagos level 60 62832
• Bonereaver Sentinel level 56 61767
• Brilliant Wind Serpent level 58 61480
• Cobalt Broodling level 56 10660
• Cobalt Wyrmkin level 56 7435
• Duskfang Creeper level 63 61935
• Dust Stormer level 57 11744
• Elder Bhu'robi level 58 62992
• Faladar Starsplinter level 57 61164
• Grawlsh the Mad level 56 62794
• Highvale Gorilla level 57 61074
• Infinite Rift-Lord level 62 65105
• Krybee level 58 63030
• Lord Xanvarak level 63 61609
• Manascale Whelp level 60 59988
• Miraxx Foulheart level 56 62813
• Moonshade Kodo level 56 63007
• Moonwhisper Elekk level 57 63008
• Relentless Felguard level 62 61351
• Relentless Temptress level 61 61350
• Rholgast level 57 62065
• Rivash the Deceiver level 58 63117
• Rotting Ancient level 57 63146
• Sanctum Dreamer level 62 60742
• Sand Snipper Crawler level 56 63006
• Shadowbane Alpha level 63 61191
• Skitterweb Crawler level 60 61206
• Skitterweb Venomfang level 62 61208
• Spellstriker level 58 62831
• Spire Spiderling level 56 10375
• Starcaller level 58 62830
• Temporal Dust level 61 61317
• Thundertusk level 58 63031
• Warbark level 58 63029
• Whispering Satyr level 57 63142
• Wretched Sprite level 56 63063
• Xalthix level 61 61565
• Zafan level 60 61613
• Zandaxxius level 57 63067

Only the first 40 are listed.

Found in 6

• Arena Treasure Chest 1.5% 179697
• Large Mithril Bound Chest 0.5% 153469
• Large Solid Chest 0.5% 153464
• Solid Chest 0.5% 4149
• Solid Chest 0.5% 153451
• Solid Chest 0.5% 153453

Contained in 3

• Reinforced Steel Lockbox level 2 0.5% 4638
• Mithril Lockbox level 2 0.4% 5758
• Sturdy Junkbox level 1 0.1% 16884