You see a soul cage
Notes
The cage must be destroyed quickly in order to prevent Goshnar's Malice to absorb it and become stronger.
Abilities
Unknown.
Damage Taken From Elements
Physical 
Death 
Holy 
Ice 
Fire
Energy
Earth
Location
In the boss room during the fight against Goshnar's Malice as part of the Soul War Quest.
Behaviour
It doesn't move or do any damage.