The best Fusion Rifles in Destiny 2 Season of the Lost are the Vex Mythoclast, Null Composure, One Thousand Voices, PLUG ONE.1, and Merciless. Vex Mythoclast and Merciless are Exotics that both received individual buffs to their own stats, and buffs as part of the Fusion Rifle weapon type. One Thousand Voices is another Exotic Fusion Rifle, but it's the only Fusion Rifle that uses Power ammo in Destiny 2. Both PLUG ONE.1 and Null Composure are Legendary Fusion Rifles , but they can keep pace wit...