Also I need to say this real quick as a heads up for some people:
I swear to high heaven the dozens of YT videos and guides I've watched on this relic over the last 3 months all say you need kill Ravagers with traps or whatever (thats fine)
Except my Ravager round was like 59 and I decided to just do it on the regular round 60 round just as a "maybe it'll work" instead of waiting 25 minutes for the next Ravager round… bro it WORKS WITH ZOMBIES.
Why does everyone tell you to do the hassle of a Ravager round that you have to wait for? This is the most information-conflicting relic in the game I've ever seen.