This fan found an easy Destiny 2 farm for Deepsight Opulent weapons

pcgamesn.com:

If you’re after more of Destiny 2’s red border weapons in the the MMO game’s Season of the Haunted, YouTuber Skarrow9 just made the process much easier. Destiny 2’s red border weapons, officially called Deepsight Resonance weapons, were incredibly difficult to come by when the Witch Queen first launched, and they’re still quite rare even in Season of the Haunted. It makes weapon crafting rather difficult and nigh impossible if you’re hoping to craft some of the new Opulent weapons.

Skarrow said their exploit came about by chance, as they and some friends tried to figure out easier ways of obtaining Deepsight weapons in the new weekly quest. It works only in a few specific instances, namely, the Bound in Sorrow quest stages that require Bound Presence, so while you can grind for Deepsight Opulent weapons, it won’t work for other dungeons or quests.

On the bright side, you’ll get plenty of Opulent weapons and much more Opulent Umbral Energy for focusing your weapons than usual. That’s a good thing, considering it takes over two dozen Opulent Umbral Energy to focus a weapon in Season of the Haunted.

For the exploit to work, Skarrow says you need to progress the seasonal weekly quest Bound in Sorrow to one of the steps where it requires you to collect Bound Presence. Bound Presence is usually a random drop in Nightmare Containment, but if you run the activity while one of these Bound in Sorrow steps is active, Skarrow found Bound Presence is a guaranteed drop in Tier 3 chests.

Before you run Nightmare Containment, make sure your consumables inventory is full. Some fans recommend buying Charge of Light from the Dreaming City or tracking down Xur and buying Paraversal Haul as easy, surefire ways of getting enough consumables.