Even thought I got my atma weapon, I still agreed that the atma grind is ridiculous, everytime I started to grind for it, I feel like I need a nap. However, I found many people are able to complete this phase of the zodiac weapon and some even got a 2nd atma weapon, so I suppose the atma drop rate is not as bad as most people say. Even as I said that, the drop rate was not that great for me, I still remember raging in fc chat about not having an atma drop after hours of grind.