History of Microcosm

Microcosm is a Kinetic Exotic Trace Rifle from Destiny 2: The Final Shape.

Overview

Its intrinsic perk, "Paracausal Beam", fires kinetic light that deals substantial bonus damage to enemy shields. Archetype: Trace Rifle (heavy slot).

Acquisition

Complete the quest "Convalescence: Budding". You need to finish the Iconoclasm campaign mission so the Pale Heart opens up as a patrol area, then reach the Queens step ("Queens, Part 1"). Complete the three Focus co-op missions under Replayable Missions (Convalescence: Rootbound, Underbrush and Greenery; these start at 2005 Power with no matchmaking), then return to Micah-10 in the Lost City for the rifle (per Prima Games and Screen Rant search summaries).

Catalyst

The catalyst "Thresh" grants Super energy for kills, and an upgraded perk adds "Stopping Power" for better stagger and more damage against weakened targets. It drops from ritual activities (Vanguard Ops, Crucible, Gambit) or Exotic Orders in the seasonal hub.