You see a voidshard
Notes
It looks the same as a Breach Brood.
Abilities
Melee (0-300+)
Energy Beam (300-450?)Damage Taken From Elements
Physical 
Death 
Holy
Ice
Fire
Energy
Earth
Location
The Orc Cult boss room under the Edron Orc Cave.
Behaviour
It fights in close combat.
Strategy
Unknown