(2) Set (Affliction): While channeling Drain Life or Drain Soul on a target afflicted by your Corruption, Unstable Affliction, and Agony, Agony will generate 1 additional Soul Shard.
(2) Set (Demonology): Hand of Gul'dan has a chance to summon 50% more imps.
(2) Set (Destruction): Immolate deals 10% increased damage.
(4) Set (Affliction): When Agony grants a Soul Shard, you have a chance to gain 5% haste for 10 seconds.
(4) Set (Demonology): You have a 15% chance for Shadow Bolt or Demonwrath to generate 1 additional Soul Shard.
(4) Set (Destruction): Increases the damage done by your Chaos Bolt spell by 10%.
Shadow Council's Mantle is one of 5 pieces of Shadow Council's Garb, alongside Shadow Council's Gloves, Shadow Council's Hood and Shadow Council's Leggings and others. Bonuses activate at 2 pieces and 4 pieces equipped.
Related
Shadow Council's Mantle Game Data
Appearance
In the Appearances collection, Shadow Council's Mantle is listed as Boss Drop. Appearance IDs: 23853, 23844, 23869. 1 other item wears the same appearance:
Read from the World of Warcraft client build files (JournalEncounterItem, JournalEncounterCreature, Achievement) and the Blizzard Game Data quest API.
How Shadow Council's Mantle Compares
Who It Suits
Cloth is the armor type Mage, Priest and Warlock wear. With Intellect, Shadow Council's Mantle suits Discipline, Holy and Shadow Priest; Arcane, Fire and Frost Mage; Affliction, Demonology and Destruction Warlock.
Transmog Sets
Shadow Council's Mantle is part of the transmog set Shadow Council's Garb (Warlock only), which the Appearances collection lists in 3 versions. The other 13 pieces:
Blizzard numbers items as they are created, so the named items next to ID 115589 (115584 to 115594) were usually added in the same batch as Shadow Council's Mantle: the same quest line, zone, vendor or reward set.