Merciless Cloak

Dropped by 4

• Omgorn the Lost level 50 0.7% 8201
• General Fangferror level 51 0.7% 6650
• The Behemoth level 50 0.4% 8924
• Sul'lithuz Sandcrawler level 47 0% 8095

Dropped by, from a shared table 40+

• Ancient of Wisdom level 59 62814
• Barkskin Den Watcher level 62 61346
• Barkskin Ursa level 62 61342
• Barkskin Windtalker level 62 61347
• Blackrock Warlock level 57 7028
• Bonereaver Sentinel level 56 61767
• Dust Stormer level 57 11744
• Elder Bhu'robi level 58 62992
• Elder Growlheart level 62 61348
• Flamescale Dragonspawn level 57 7042
• Flamescale Wyrmkin level 58 7043
• Frenzied Dustwing level 57 63041
• Hate Shrieker level 57 8541
• Highlord Taelan Fordring level 63 1842
• Highvale Gorilla level 57 61074
• Miraxx Foulheart level 56 62813
• Moonwhisper Elekk level 57 63008
• Red Wyrmkin level 59 1046
• Rholgast level 57 62065
• Rivash the Deceiver level 58 63117
• Rockwing Screecher level 59 10409
• Rotting Ancient level 57 63146
• Runic Construct level 61 60596
• Sanctum Dreamer level 62 60742
• Scarlet Cavalier level 58 1836
• Scarlet Paladin level 56 1834
• Scarlet Priest level 57 10608
• Scarlet Spellbinder level 58 4494
• Shatterspear Drummer level 58 11196
• Shatterspear Troll level 58 10919
• Temporal Dust level 61 61317
• Thundering Invader level 57 14462
• Thundertusk level 58 63031
• Typharion level 61 62748
• Wailing Death level 57 1804
• Warbark level 58 63029
• Whispering Satyr level 57 63142
• Withermaw Shaman level 62 62871
• Xalthix level 61 61565
• Zandaxxius level 57 63067

Only the first 40 are listed.