Upgrades this weapon to a Masterwork. Once upgraded, the weapon will obtain enhanced capabilities, such as increased stats and/or additional perks.
It will generate Orbs on multikills and gain a tracker that displays the number of enemies defeated with it. The Masterworked weapon will also receive an additional perk.
Defeat enemies using Izanagi's Burden to unlock this upgrade.
Defeat targets using this weapon to unlock this upgrade.