Trying to find that last relic recipe

I’ve got all the relic blueprints except one (belgotians carnage, an actually useful one too to add insult to injury) and I’ve been trying to find it by farming various nemesis bosses, to no avail. I must have killed hundreds by now and the last time I saw a blueprint drop was maybe 30 runs ago. And that was a sword blueprint.

Just putting my frustration into words, the way to system is set up makes those last few missing blueprints a nightmare to find.

About as much fun as banging my head into a concrete wall.