A small sample version of this image can been seen at the official Dragon's Crown website. Some info of what the image is for from the website:

There are 50 "Treasure Arts"!

There are a total of 50 Treasure Arts to obtain as rewards from completing quests. Each one is hand-drawn by the artists at Vanillaware! In addition to the stunning artwork, each comes with more story detail further fleshing out the world of Hydeland, and the mystique surrounding the Dragon's Crown.