Mystical Armor

Dropped by 5

• Sir Zeliek level 63 1% 2000094
• Crimson Hammersmith level 60 0% 11120
• Scarlet Warder level 54 0% 9447
• Shadowforge Peasant level 54 0% 8896
• Twilight Keeper Havunth level 60 0% 11804

Dropped by, from a shared table 40+

• Arcane Chimaerok level 62 12801
• Blackhand Assassin level 61 10318
• Chimaerok level 61 12800
• Commander Dardosh level 61 13140
• Death Talon Hatcher level 61 12468
• Death Talon Overseer level 62 12461
• Death Talon Wyrmguard level 63 12460
• Disrupted Arcane Elemental level 63 61949
• Doomguard Commander level 61 12396
• Duskfang Creeper level 63 61935
• Firelord level 62 11668
• Firewalker level 62 11666
• Flameguard level 62 11667
• Gurubashi Berserker level 62 11352
• High Speaker Jam?wahli level 62 63100
• Hive'Regal Hive Lord level 61 11734
• Hive'Zara Wasp level 61 15325
• Ima'ghaol, Herald of Desolation level 63 62606
• Infernal Destroyer level 63 62017
• Infinite Rift-Lord level 62 65105
• Lava Annihilator level 62 11665
• Lava Elemental level 62 12076
• Lava Surger level 62 12101
• Lord Xanvarak level 63 61609
• Mana Stalker level 62 61354
• Naxxramas Cultist level 61 15980
• Onyxian Warder level 62 12129
• Qiraji Mindslayer level 61 15246
• Qiraji Swarmguard level 61 15343
• Relentless Felguard level 62 61351
• Risen Construct level 61 10488
• Risen Deathknight level 61 16154
• Scalebane Royal Guard level 62 1050
• Shadowbane Alpha level 63 61191
• Skitterweb Venomfang level 62 61208
• Speaker Gan'hota level 63 61361
• Spectral Worker level 62 61934
• Vekniss Soldier level 61 15229
• Warbringer Overseer level 63 62019
• Warlord Hanzento level 63 61360

Only the first 40 are listed.

Found in 4

• Dark Coffer 0.5% 160845
• Old Treasure Chest 0.4% 176944
• Solid Chest 0.3% 153454
• Solid Chest 0.3% 153453

Contained in 2

• Ahn'Qiraj War Effort Supplies level 1 1.3% 21513
• Thorium Lockbox level 2 0.6% 5759