Looks at my endo total of 300k

You gotta pump those numbers up, those are rookie numbers in this racket.

I'll admit, I have absurd luck with finding Ayatan Sculptures... Plus Arbitrations can give you an Ayatan Amber Star blueprint so you can burn those stupid amounts of cyan stars (2 cyan stars are used to make one amber I think). I'm kinda greedy. I'll literally explore every square inch of a mission to gather all the resources. More often than not, it leads to finding a sculpture. If you don't want Thief's Wit, load up a companion with Animal Instinct. It shows Ayatan Sculptures on the map. It's why I find so many.

Seriously though, Umbral mods are fucking expensive. 40k Endo and 1.8 million credits per mod to max out. I don't even have enough to max out all of them (I've got like 8 million credits? I really should hit the Index for a while...). Planning to do Fiber and Intensify for my Umbral Rhino build. This to be exact. Not bothered about min-maxing, I'm going for pure survivability with Iron Skin build and it buffs Roar pretty well too.