Serenity Belt

Dropped by 8

• Colossus of Zora level 63 10% 15740
• Colossus of Zora level 63 10% 15740
• Nefarian level 63 1.3% 11583
• Onyxia level 63 1.3% 10184
• Ragnaros level 63 1.3% 11502
• Ragnaros level 63 1.3% 11502
• Korrak the Bloodrager level 62 0.9% 12159
• Nefarian level 63 0% 11583

Dropped by, from a shared table 40+

• Ancient of Wisdom level 59 62814
• Avranagos level 60 62832
• Azuregos level 63 6109
• Azuregos level 63 63107
• Barkskin Den Watcher level 62 61346
• Barkskin Ursa level 62 61342
• Barkskin Windtalker level 62 61347
• Cold Wraith level 58 1800
• Colossal Anubisath Warbringer level 62 15743
• Duskfang Creeper level 63 61935
• Elder Bhu'robi level 58 62992
• Elder Growlheart level 62 61348
• Hive'Ashi Drone level 58 13136
• Hive'Ashi Stinger level 58 11698
• Imperial Qiraji Destroyer level 63 15744
• Infinite Rift-Lord level 62 65105
• Krybee level 58 63030
• Larnaea level 60 63034
• Lieutenant General Nokhor level 63 15818
• Lord Kazzak level 63 63108
• Lord Kazzak level 63 12397
• Lord Xanvarak level 63 61609
• Manascale Whelp level 60 59988
• Qiraji Lieutenant General level 63 15757
• Relentless Felguard level 62 61351
• Relentless Temptress level 61 61350
• Sanctum Dreamer level 62 60742
• Shadowbane Alpha level 63 61191
• Shatterspear Troll level 58 10919
• Skitterweb Crawler level 60 61206
• Skitterweb Venomfang level 62 61208
• Spellstriker level 58 62831
• Supreme Anubisath Warbringer level 62 15758
• Temporal Dust level 61 61317
• Teremus the Devourer level 60 7846
• Warbark level 58 63029
• Whispering Hydra level 59 63005
• Withermaw Shaman level 62 62871
• Xalthix level 61 61565
• Zafan level 60 61613

Only the first 40 are listed.

Found in 1

• Solid Chest 0% 153454

Contained in 2

• Emerald Encrusted Chest level 2 2% 10752
• Mithril Lockbox level 2 0.1% 5758