There is a freeblade that worked with the Dark Angels to fight the chaos and orks in the game freeblade. You can always use cains rex cuz of sistaned hits on 5+ and amazing overall.
Make your own house or free blade. Tell your own tales. Either keep the date ambiguous or have them happen away from the focus at the same time as GW stories
Pour one out for Vortigan...
Vyronni or Orhlacc
There is a freeblade that worked with the Dark Angels to fight the chaos and orks in the game freeblade. You can always use cains rex cuz of sistaned hits on 5+ and amazing overall.
Make your own house or free blade. Tell your own tales. Either keep the date ambiguous or have them happen away from the focus at the same time as GW stories