Talk:Medal System/@comment-25889587-20151025110604/@comment-26044650-20151028005918

One of the things you can exchange medals for are Crystals. However, it is not available all the time - you will just need to catch it in the Medal Exchange Center. Fortunately (or unfortunately, depending on how you look at it) they change their wares every 24 hours which gives you ample time to get what you need.