Destiny 2: Beyond Light -  Hawkmoon Catalyst - Harbinger Activity

Follow the bird of prey. Bring the winged weapon to full glory by unlocking the Hawkmoon Catalyst. Customize this Exotic Hand Cannon by playing the Harbinger Activity for random rolls.

The Hawkmoon Exotic Quest is available to all Season of the Hunt owners.
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Dive into the free-to-play world of Destiny 2 to experience responsive first-person shooter combat, explore the mysteries of our solar system, and unleash elemental abilities against powerful enemies. Create your Guardian and collect unique weapons, armor, and gear to customize your look and playstyle. Experience Destiny 2’s cinematic story alone or with friends, join other Guardians for challenging co-op missions, or compete against them in a variety of PvP modes.

https://www.xbox.com/games/destiny-2

Source: XBOX YouTube