Tradeable Cannot be obtained from transmutation Invisibility Augment: Weapon noise is reduced by 100% while invisible. Zenurik  8,000 https://www.warframe.com/droptables Hushed Invisibility is a Warframe Augment Mod for  Loki's  Invisibility that allows it to reduce the noise level of weapons fired. Stats[] Rank Noise Reduction Cost 0 50% 6 1 65% 7 2 80% 8 3 100% 9 Acquisition[] This mod can be acquired by attaining the rank of Maxim under the Arbiters of Hexis, or the rank of Exalted under the Red Veil, and spending 25,000 Standing to purchase. This mod can periodically be acquired from The Circuit. Notes[] When doing a Stealth mission, enemies still need to be killed in a short time period, otherwise they will become alerted and alert all nearby enemies. Surviving enemies will also blindly fire at the point of origin of the attack, posing risk for  Loki. This augment will not be active if Loki becomes invisible by other means, e.g.  Untraceable,  Arcane Trickery, or etc. Media[] Modular (Warframe) E1 - Hushed InvisibilityWarframe Quick Look Loki Hushed Invisibilty Augment Mod Patch History[] Hotfix 30.5.1 (2021-07-06) Fixed a few abilities, items and screens that were not applying weapon noise reduction properly nor correctly interacting with Mods that have that effect. This should resolve issues with Loki’s Hushed Invisibility Update 16.0 (2015-03-19)