I'd rather it be a hand cannon. The Greatest Oath: "...not. She loves me. She loves me not. She..." Hand cannon: with an appearance that is clearly linked to the hive, this slender, long barreled hand cannon looks to be alive. A large, spiked hand guard curves to narrow itself until it meets with the end of the barrel. On the side inward to the user is what appears to be a lung, rising and falling as it breaths. Protruding from the outward side of the weapon is a boney spike at the end of a fleshy tentacle. The spike inserts itself into the arm of the user each time the weapon is readied. While aiming in, two transparent membranes fold up at each end to act as weapon sights. Reloading sees 6 long, barbed teeth (3 on each side) open to release the ammo cartridge. Removal of the cartridge reveals a mouth lined with small additional teeth. -Til' death...: each shot fired by this weapon gains damage bonus and mild poison effect at the cost of one forth of player health. Kills return one eighth of player health with 1% chance of full health restoration. -kills while critically wounded immediately begin health regeneration. -...do us part: death while holding this weapon has chance to cause solar explosion.

Or a temporary buff that prevents enemies from killing you with a crit shot...?

Actuall exotic perk: Return to sender (Ability to bring up shit from 3 years ago) LOL

Op unless it was really slow rate of fire