In the latest Patch 10.1 PTR build, Blizzard added a special effect for Ashkandur, Fall of the Brotherhood, a Two-Hand Sword reminiscent of Ashkandi, Greatsword of the Brotherhood.

New Effect added: Ashkandur, Fall of the Brotherhood – Your auto-attacks have a low chance to strike again with violent purpose, dealing 22,709 Shadowflame damage. This damage is doubled against Humanoids. (Approximately 1 proc per minute)

The sword drops in Aberrus, the Shadowec Crucible raid, and has 6 color variations. See below for more details.