[@Jb]

Thanks for the feedback. It makes sense and I will make a few tweaks. For his history, I just like the idea of a Cadian colony of Fenris. The Space Wolves recruit from there so humans are at least able to survive and I feel like it would be feasible for a colony to be established there, even if the population is minimal after Magnus' attack. Also, it's in the Great Rift right now and, iirc, there are roaming bands of Chaos Spawn so I like that Lyvon would have exposure to, and reason to fear, the forces of chaos as well as psykers. I just feel like overall it brings a lot of pieces together. It's just neat ¯\_(ツ)_/¯

Would it be more acceptable then to just phrase things so that Ahriman's discrete attack on their colony was partly due to Psychic Awakening? Like it disturbed the relic in a way he could sense and he came to reclaim as part of his efforts to reverse the Rubric. There doesn't have to be a significant link to The Fall Of Cadia.

For the second part that is fine too. I will tweak that to make it more appropriate.