Ignoble Deeds is an origin trait in Destiny 2 that can appear on 4 weapons. An enhanced version exists on crafted and some newer weapons.
What Ignoble Deeds does
Gain charges by inflicting subclass debuffs on targets. Consume charges by defeating combatants. While charged, this weapon gains handling, reload speed, and Sword charge rate.
Enhanced version
Gain charges by inflicting subclass debuffs on targets. Consume charges by defeating combatants. While charged, this weapon gains significantly more handling, reload speed, and Sword charge rate.