The Umbracrux

The Umbracrux is a Unique Dagger that can only be equipped by the Rogue and can be found in any World Tier. Better versions can drop in higher World Tiers:

Sacred - Item Power 625 - 750 - Drop in World Tier 3. Must be character level 35 to equip.
Ancestral - Item power 780 - 925 - Drop in World Tier 4. Must be character level 55 to equip.

The Umbracrux can be target farmed from Infernal Hordes.

The Rogue has access to other specific Rogue Unique Items.

The Umbracrux

One of a pair of twin daggers, forbidden from ever meeting. Bitter voices whisper from the blade.

Type: Unique Dagger
Class: Rogue

Description: Your Subterfuge Skills create an attackable Shade Totem for [3.0 - 8.0] seconds. Any damage it takes is replicated onto surrounding enemies at 20% effectiveness. You may only have 1 Shade Totem active at a time. This damage counts as a Trap skill.