I have started getting the Atma and I so far have found about 2. One took me a good 2 -3 hours to get and my second took me about 3 fates. I spent about 3 hours trying to get the Atma of the Archer but no luck. It is probably just really bad luck but you could always contact SE and explain. Getting the Atma is just ridiculous and is put this way because people where saying the game was too easy so they put in this system.

I do not want the quest to get my upgrade to be easy but just giving it a ridiculous drop rate is not making it more difficult at all it is just time consuming and in some cases you will be doing all the fates in a low level area and preventing someone who needs the experience from participating. I wouldn't have mind if I had to do a unique fate, dungeon, quest or trial that was challenging but that is not the case. I really hope they increase the drop rate so that you arn't spending days and days getting one Atma as I have a job and because of the times I am struggling to even get through doing all the dailys let alot get an item with a very low drop rate.