https://www.polygon.com/2017/12/6/16741932/destiny-2-prometheus-lens-exotic-trace-rifle-pvp-crucible

Bungie added a batch of new and refreshed exotic items to Destiny 2 yesterday with the release of the game’s first expansion, Curse of Osiris, including a new trace rifle that’s dominating the game’s competitive multiplayer Crucible. Players are already pleading with Bungie to nerf the gun, named Prometheus Lens, and maybe even cancel this weekend’s Trials of the Nine mode.

Prometheus Lens is a new trace rifle energy weapon, a companion piece to the existing Coldheart exotic. What differentiates Prometheus Lens from Coldheart is the former’s Prismatic Inferno trait. “Fires a solar trace beam that generates a damaging heat field that grows while the weapon continues to fire,” the gun’s description reads. Kills with Prometheus Lens also return ammo to the weapon’s magazine, but it’s the growing solar damage and range of the new exotic that is wreaking havoc in Destiny 2 PvP currently.