History of Buried Bloodline Catalyst

Buried Bloodline Catalyst is a triumph tied to the Buried Bloodline Exotic sidearm from the Warlord's Ruin dungeon. Game text: defeat targets while using Buried Bloodline (700 targets), and assist players in completing their Buried Bloodline catalyst puzzle.

How to complete

1. Own Buried Bloodline (random drop from the final boss of Warlord's Ruin).
2. Complete the quest "In the Shadow of the Mountain" and solve the three torch-and-totem puzzles in the dungeon: the jail section after the first boss, the bridge section before the second boss, and the outdoor cavern after the heart of the mountain. Shooting a Taken blight gives the Imminent Wish buff; activate the totems matching the lit torches. A secret boss (Primeval Thressia) finishes the catalyst.
3. Get 700 kills with the weapon to activate the catalyst, which adds Splitvein Lineage (weakens on hit while Devour is active).
4. The triumph also asks you to help other players with their puzzle, so run the dungeon with friends who need it.

Notes

Shacknews gives the 700 kills and puzzle locations; the triumph text matches the 700 count. Whether this triumph belongs to a seal is not confirmed.