History of Bad Omens

Bad Omens is a Legendary Void Rocket Launcher with an Aggressive Frame (25 RPM, 1-round magazine), introduced in Forsaken.

Overview

Destinypedia says players seek tracking with cluster bombs for PvE, or Auto-Loading Holster with Kill Clip for PvP; the Game Wiki's curated roll is Volatile Launch, Impact Casing, Tracking Module and Cluster Bomb. It has ornaments called "Foretelling" and "Augury of Snakes" per Destinypedia.

Acquisition

Both sources list Gambit, a random drop or rank-up packages from The Drifter.

The two opened sources (Destinypedia and the Destiny Game Wiki) disagree on some details such as the season of introduction, and neither states whether the weapon can be crafted or has an Adept version, so those are treated as not stated. Bungie's in-game source text reads "Random Perks: This item cannot be reacquired from Collections."