something I noticed about atma

I was helping someone with atma today, I haven't bothered with it at all since I don't need the weapon. Had some beginners luck, we farmed for 2 hours and got five atmas between us. great, right? well, no. only one of our atmas overlapped. this means that if I wanted to group with this person to do more atmas then we would have to retread areas that one of us already have the atmas.

maybe a little more incentive to group farm these?

You can save it for other classes, even if you don't have one you want now a future class might have a relic you want.

can you have more than one of the same atma?

Yes, but unfortunately they don't stack so hopefully you have retainer space.

Edit: like the post above me says

Just store them in your retainer until you have all the atmas needed to turn in.