Silent oblivion - Where does this drop?

[Kalba]

Right Hand
Name: Silent Oblivion
Level: 51 Quality: 99
DPS: Bonus:
Effect 1: 21 Piety
Effect 2: 21 Dexterity
Effect 3: 48 Hits
Effect 4: 7 Healing Bonus
Effect 5: 6 Acuity Cap Increase
Effect 6: Empty
Effect 7: Empty
Effect 8: Empty
Effect 9: Empty
Effect 10: Empty
Utility: 40.0


Where does this drop?

 

[Xanthian]

Ring/Brace/Shield of Silent Oblivion drop from ML5 Boss Ammut so I would say that does too.

 

[Kalba]

Ring/Brace/Shield of Silent Oblivion drop from ML5 Boss Ammut so I would say that does too.

Thanks.