Elemental mana flowed around Walker. He was using the eternal orb to condense and store as much as the orb could hold. From there he was slowly mixing the manas together to create the natural mana that he would need to use better skills and manipulate elemental mana with more fluidity. However, the mental strain was where he was feeling the pressure.
Since Walker had dedicated himself to mostly magical skills he had been constantly taxing his mind and body. He had decent strength and endurance due to their travels and the fact that whenever he trained he would use movement skills in some form. Yet, he had skipped out on the long periods of meditation that most mages would do to expand their mind and strengthen it. Being able to find their own calm in the midst of elemental chaos was why a mage would be able to do great and wondrous things with their elemental magic.
