Ethereal magic is manipulation of major elements.

Ether is high level element that can be separated more common elements.

I think it's close to elemenal nigh Omnipotence.

Thank you, sir. Realm

It's quite ironic. Ethereal is the combination of aether and nether. Aether is the source of chi, mana, life force and magic as well. So you are using magic that combines the very source of magic and the opposite of the source