Runes are items you can use to power up your characters. A. They come in (I) different shape / spaces / rarities, (II) 5 individual stats : ATK , DEF , HP , CRIT , and MAG , (III) 5 colors : red , blue , pink , green , and yellow , (IV) And 2 different types : Skill , Stat buff . (I) To start off, w...