Attack magic has a property called 'attributes'. Its relationship to the enemy's attribute can significantly alter the damage that a spell deals. If your magic has the opposing attribute to your enemy's attribute, the damage will increase, whereas if the attributes are the same it will decrease. A monster with the fire attribute will be weak against water magic, but strong against fire magic. A monster with the water attribute will be weak against fire magic, but strong against water magic. A moister with the earth attribute will be weak against wind magic, but strong against the earth magic. A monster with the wind attribute will be weak against the earth magic, and strong against the wind magic.