Phantasy Star Universe: Ambition of the Illuminus

When you get to a high enough level to use the Muktrand, go to the Synthesize shop and buy the Board for it. Get the necessary items to make it, it may cost you some mesata. Go insert the board, and Use a Photon for your "???" material. This will increase the chances of your item being made. Then just simply sell the Muktrand, you should get 392,000 mesata for it. Once you get enough money, start making them in 5's and 10's to get loads of Mesata.