system
Given the following post, respond as if you're commenting on Reddit:
human
[40K] How can dark eldar tech help to save a golden throne?

From mechanicum codex:

"The Tech-Priest custodians at work in the Emperor’s Palace uncover irrevocable failures in the mechanisms of the Golden Throne. A dozen contingency expeditions are immediately launched, including a Xanthite war procession sent through the Exhubris Portal. The Xanthites fight through Harlequin Troupes and Daemon hordes alike before reaching their intended destination. In the grave-cold oubliettes beneath Commorragh, a dark bargain is struck."

So, what dark eldar technologies/sorcery could possibly help to save a golden throne?
gpt
The Dark Eldar once stole an STC that could cure all disease, potentialy extinguising Nurgle's grip on humanity.

Why did the Dark Eldar steal this? Litteraly a contest to determine which Dark    Eldar was the most dickish of them all.

Either this STC or other technology stolen from the Imperium could be of great benefit in restoring the golden throne.