The Legend of Heroes: Trails in the Sky/Orbments

Orbments are devices that allows one to cast arts. They have six slots where quartz can be inserted and the slots are arranged in a configuration of lines from the center. Some slots need to be initially opened before a quartz can be inserted and some may only take a quartz of a specific elemental type. Each quartz has an elemental value and the total value in a line determines which arts can be cast. Each character has their own unique orbment.