Although there was a large number of skills to choose from. Moon's eyes only focused on three; Advanced Elemental Body, Purify and…Appraisal.
Evolving his elemental body might provide him with a stronger element than lightning. It wasn't a guarantee, but it was possible. Having a stronger element would make his firepower stronger than ever.
But after some deeper thinking, Moon rejected the idea. Whilst having an element stronger than lightning was certainly inticing, it was certainly not the smartest idea.
His class allowed him to copy classes, and in the Second Sanctuary he would certainly encounter more powerful Evolvers with advanced elements like ice, and others.
Moon's firepower had never been an issue, even against Supreme Rank creature like the turtle. Although it had taken him a long time to kill, his attacks were still very effective, leading to its eventual death.
