Breakthrough To Become Mana Entity.

There's fire and earth to create magma, earth and wind to create metal, water and darkness to create poison, etc. These are things that are not usually available to mana entities except if they have the divine ability for it. These things are created with the fusion of elements.

They are good to have, but they aren't his aim. Creating a fusion with two elements is easy, three is difficult, and six is too much. He doesn't plan to fuse them at all, but to create a configuration that will just enhance the individual elements. Make them more powerful than normal.