Osteo Striga

Screaming Swarm sends out a stream of sentient, toxic projectiles that follow the targeted enemy, which makes aim less demanding.

Toxic Overload is the exotic frame: a final blow, or several precision hits, sets off a burst that inflicts potent corruption on nearby targets. The catalyst makes final blows with corruption return ammo to the magazine.

The Collections line names the Vox Obscura Exotic quest, but the pattern record says Osteo Striga unlocks on completion of The Witch Queen campaign, and the catalyst record points to the same campaign.

Unlike a fixed-roll Exotic, Osteo Striga has random barrel, magazine and stock columns, so each copy can differ.

Only the introductory mission of The Witch Queen campaign is open to all players; the rest of the campaign needs The Witch Queen expansion.

The random columns draw barrels such as Polygonal Rifling, Fluted Barrel and Extended Barrel, and magazines such as Steady Rounds, Tactical Mag and Flared Magwell.

• Osteo Striga (Exotic Submachine Gun) added to your account.
• Extras: Self-play (Sherpa); add Catalyst Obtain for Osteo Striga.

• The Witch Queen expansion owned.

Does Osteo Striga track targets by itself?

The projectiles follow the enemy you are targeting, so you only need to keep the target in view.

Where is the catalyst from?

The game data says it is acquired from The Witch Queen campaign, and it is applied by reshaping the weapon.

Which slot is Osteo Striga in?

The Kinetic slot, as a submachine gun that uses Primary ammo.