Lasting Covenant is a Warframe Augment Mod for that increases 's critical chance buff duration each time an enemy is killed with a headshot.
- 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 to purchase.
- Bonus duration awarded from headshots is affected by Ability Duration.
- The limit of bonus duration is three times of duration of critical chance buff.
- For Ability Duration of 130%, would have 15.6s of critical chance buff initially, and bonus time would cap at 46.8s.
- Synergizes well with Harrow's first ability, , as it puts enemies in a position that allows for easier headshots.