Reed of the Vaunnt

The Forgotten Kingdom DLC
Activating a Mod increases Mod Generation by 15% for 10 seconds. Mod Charges have 20% chance not to be consumed on use.
Random drop on Yaesha.
Confirmed locations: The Chimney, The Twisted Chantry
Lore
It looks like some kind of ceremonial horn attached to a leather band. Despite its age, the mouthpiece is pristine, and the sound it produces pierces the air like an arrow and vibrates with an automated resonance.
"Outside of their absolute and unelected authority, the Vaunnt enjoy little more than pomp and ceremony. If summoned to their secret chamber by the sound of that awful horn, there is nothing to be done except steel oneself for whatever judgment is to come."