Anyone have an idea of getting this things easy? I know this is very unlikely,but i hope someone will tell me how to get it easily.Facing 2 Black Armored Gravios for the item is not as simple as ABC....
I found the best way to get them is to do the twin black gravios mission for the elder cat - can't remember what it's called as at work but, in two runs i got 6 brainstems, 5 for rewards, 1 from tail carve.
Obviously im suggesting that you kill both and get them in the rewards. Hope this helps :D
Gunning is the easiest way to take down the two Gravios, but you don't get the tail carves. As such, it's a toss-up: You can either go for the Gravios itself and hope for one in the rewards, or you can go for the tail carves. I recommend the latter, but you can do both anyways. I guess I was extremely lucky to nab three Stems with a HBG.
Life isn't fair. If it was, we'd all be dead. (Yes, I'm sticking with my old quote) FFX: Current challenges ~ OSGLONI ~ OSGSSONI+