The introduction of the Osteo Striga exotic submachine gun in Destiny 2 has fundamentally shifted the baseline for clear-speed strategies across both casual and high-end PvE content. This Weapon of Sorrow fires tracking toxic spikes that infect and decimate groups of combatants with devastating efficiency. However, unlocking the full potential of this legendary weapon requires acquiring and masterworking its highly coveted exotic catalyst.
Unlocking the Catalyst Pattern
Before you can equip the catalyst, you must first spend a significant amount of time leveling up your shaped version of the weapon. Guardians need to reach weapon level 10 with their crafted Osteo Striga to unlock the catalyst pattern at the crafting table. Leveling is achieved natively by defeating combatants or completing core activities while you have the submachine gun actively equipped in your kinetic slot.
Once the required level is reached, you must return to the Relic at the Enclave on Mars to reshape the submachine gun. Forging this legendary upgrade into your build requires a substantial payment of rare crafting materials. Specifically, you will need to spend three Ascendant Alloys, 140 Resonant Elements, and 2,000 Neutral Elements to finalize the process.
Masterworking and Reload Mechanics
Inserting the catalyst into the weapon tracking screen is only the first step, as you must then complete a masterwork objective to fully activate its unique perk. Guardians must defeat 700 enemies with the toxic submachine gun to fully unlock the operational masterwork traits. Utilizing specific armor pieces like the Warlock's Necrotic Grip can significantly speed up this process by spreading extra poison damage across the battlefield.
Once the masterwork is complete, poison final blows will automatically return ammo directly to the magazine, often overflowing it well past its standard capacity. Experienced players recommend burst firing the weapon to maintain this overflow state and avoid triggering the lengthy manual reload animation. Overflowing the magazine mid-reload can accidentally override your extra bullets, meaning careful trigger discipline is crucial for maximizing uptime.
Synergies and Sandbox Meta
The upgraded ammunition economy turns this submachine gun into arguably the most efficient ad-clear tool available in the entire Destiny 2 sandbox. The weapon pairs beautifully with newer subclass frameworks, especially when spreading Strand Suspend effects across tightly packed rooms. The persistent tick damage over time also allows guardians to steadily wear down tough Unstoppable and Overload champions without relying exclusively on heavy ammo.
While this tracking submachine gun remains a dominant choice for regional dungeons, players should note its distinct range drop-off in competitive environments. The homing projectiles are designed to dissolve completely outside their effective combat range, making the gun far less effective for long-range multiplayer duels. For general PvE loops and seasonal activities, completing this catalyst remains a highly recommended objective for every serious guardian.
