Blizzard added 2 pieces of Unique Loot from Aberrus in the latest 10.1 PTR build. A cloak that steals stats from nearby allies and a polearm that unleashes waves of ancient lava.
Voice of the Silent Star (Back) drops from the final boss of the raid and comes with the following Old God-themed effect:
The Silent Star – Whenever nearby allies take damage, the Voice has a chance to beckon you. Upon hearing its call 10 times you fully submit to its influence, stealing -139 of the 4 nearest allies’ lowest secondary stat, and giving you the stolen amount plus 1,391 to your highest secondary stat for 8 sec. (Approximately 5 procs per minute)
The second item is a polearm (Djaruun, Pillar of the Elder Flame) with an interesting On-Use effect:
[PH] Elder Cantrip Polearm – Ignite the Elder Flame to siphon the heat from nearby enemies, dealing 3,900 Fire damage to them and causing your melee abilities to unleash waves of ancient lava, dealing 11,702 Fire damage split between all enemies struck for [10 seconds]. (Instant, 2.5 min cooldown)