In addition to the Hierarchy of Needs Exotic bow and The Manticore Exotic SMG, Destiny 2's Season of the Seraph brings a new Exotic pulse rifle called Revision Zero. Revision Zero's intrinsic trait makes it strong against Barrier Champion's with its shield-piercing ammo. It also gathers target data from precision kills that lets you temporarily swap for a high-damage scope. Completing The Hidden Shape quest steps will give you Revision Zero and its weapon pattern for shaping it.

First, continue Season of the Seraph's Week three questline--called More Than A Weapon--and at Step 22 of the quest, you must speak with Elsie Bray at the Holoprojector. Accept The Hidden Shape Exotic quest and complete the Operation: Seraph's Shield mission--which you can access from the H.E.L.M. and is set at Power level 1580 for Normal mode. This mission doesn't have matchmaking, so you can complete it solo.

Operation: Seraph's Shield Mission Guide

Once at the facility entrance, avoid tripmines and head further into the facility. Defeat the Scanner Splicer to get the Scanner Augment, a mechanic that should be familiar from the Deep Stone Crypt raid.