system
Given the following post, respond as if you're commenting on Reddit:
human
[WH40K] Two Primarchs are in stasis, a few dead, but most just poofed. What are the chances of a loyalist Primarch returning?

The Lion and Ultramarine Primarchs are in stasis while a number are either dead or missing. What are the chances that one would return to the Empire after all this time? Furthermore, what would they likely do?
gpt
There was an incedent during the 36th millennium (I think, can't check the date right now) when several figures appeared to lead the Imperial armies across the Imperium, vanquishing many foes, and were highly reminiscent of the lost Primarchs. Once the Imperium's borders were secured, they disappeared again.

So there's that...