Spirit Erosion I commands the spirit to use its attack skill. Each spirit has a skill that inflicts element-specific sustainable damage on the target, decreases their defense to the elements, and increases their item drop rate.Water Spirit: Reduces Water DefenseWind Spirit: Reduces Wind DefenseEarth Spirit: Reduces Earth DefenseFire Spirit: Reduces Fire DefenseMagma Spirit: Reduces Fire and Earth DefensesTempest Spirit: Reduces Water and Wind Defenses.