Season of the Haunted has introduced Opulent Weapons. They originally were unlocked in the Menagerie activity. They can drop with Deepsight Resonance which allows you to craft with the perks you choose.
You will get a random drop guaranteed with this service where we farm the Leviathan and open chests.
Austringer – Hand Cannon
Calus Mini-Tool – Submachine Gun
Beloved – Sniper Rifle
Drang – Side Arm