Delve and fossil farming

Greetings folks!

I am in need of advice. I would like to talk about using a pathfinder for farming fossils in the dark around depth 100-150, where fossil appearance should not have been nerfed so hard... Last league I was copying a build that took most movement speed nodes, and had a lot of regen on gear, but I can't remember how the build looked.

Can you help point me in the direction of a solid fossil farmer build for this depth? This has to be safe for HC!!! Very important detail :D

Thank you very much <3