The Last Breath

Overview

The Last Breath is a Legendary weapon: Auto Rifle (Adaptive Frame), Kinetic, 600 RPM, 43-round magazine.

Curated roll per the fan wiki: Extended Barrel, High-Caliber Rounds, Slideshot, Moving Target. Random rolls can include Demolitionist, Killing Wind, Frenzy, Rangefinder and Adagio. Introduced in Season 15.

Acquisition

The fan wiki lists the Prophecy dungeon as its source and notes it cannot be reacquired from Collections. Bungie's item text instead points at the Emissary of the Nine / Trials of Osiris rank-up track. The sources disagree (the text may be a placeholder reused by the data), so treat the Prophecy origin as likely and verify in game.

This is a legacy-style reward weapon. It is not a craftable or Adept weapon as far as the sources show, and sunset status was not stated by the sources I opened (the fan wiki is the main source). See also Prophecy and the Crucible for the PvP context.