Necrochasm literally has the hidden perk of, +2 disappointment while equiped and active. It's crowning perk is a worse firefly. It's predecessor the Eidolon Ally is better just because it isn't a disappointing exotic, instead, it's an ok legendary. NLB has always had problems, but even worse, its bugged. Impact is as high as ice breaker's when using second barrel upgrade. But does significantly less damage. Ammo reserve is glitched, start off with max 24, can only get twelve however, because, you can't fill past that. Only 6 in reserve, ridiculous. Bungie fix this.