Walk to the center and nab the AF??? COLISEUM FRAGMENT - White Hole Gem (01/01) + 300CP ! That was easy! There are five treasure spheres out of reach around the coliseum so you will see a lot of "kupokupokupoooooo" from Mog as you launch him towards the chests. Once you have acquired the spheres, you will be richer for 10x Potent Chip, 6x Power Chip, 7x Power Sliver, 9x Power Droplet, 8x Power Bolt . Near the warp gate is a concealed treasure sphere with the Map of Coliseum . When you have nabbed all treasures, leave for the Historia Crux and visit AF300 Sunleth Waterscape once more. At this time the Crystarium will expand again.