History of Alethonym

Alethonym is an Exotic Grenade Launcher (Stasis) from Season 25, Episode: Revenant. Flavor text: "I know your name."

Overview

• Intrinsic perk: Harvester Spike. Fires a Harvester Spike projectile. Final blows create a Vestige at the target; impaling stronger combatants makes a steady stream of Vestiges.
• Trait: Vestigial Alchemy. Picking up Vestiges builds energy; cycle firing modes to create Special ammo (at 50% energy) or Heavy ammo (at 100%) at the impact point for you and allies.

Acquisition

• Season Pass reward: with the premium pass it is available at Rank 1; free-track players get it at Rank 40.
• It is a seasonal reward, so it may only be obtainable through that pass while it is available; check in-game for current access.

Catalyst

Per one guide, the catalyst is unlocked from the Episode pass at Rank 145, time-gated until Act Two released on 11/19. Another source did not list a catalyst, so details are uncertain.