 Each time the unit gains 10 experience points it increases in level, acquiring higher stats, with a maximum level of 9.Units can also defeat and "tame" monsters (which are also assigned an element) on each level, and use them in battle.Monsters, though very weak, are useful to avoid elemental weakness (a Fire Lord, for example, can tame a Wind monster, and use it in combat against a Water Fighter, thus flipping the elemental advantage).