[@Divinity]
Take note I now cannot sleep because of this roleplay.

So what are you on about? Ethereal magic destroys metaphysical connections? Are you implying Pokémon rules here? Ghost > Psychic? Because other than that I can't find a single legitimate reason for that actually making sense.

Mind you, this is magic and magic has never made sense because it's fucking magic. But what I'm gathering is that you're implying that an Ethereal lightning bolt would totally destroy the psychic and spiritual link between Shin and his staff.

Edit: This also takes into account, somehow, that it is not an incorporeal manifestation o-

Well even if this argument turns out logical in all regards I just figured out my double trump card.

Anyway. Somehow this spell takes into account that it's not just an incorporeal manifestation. It is instead a material manifestation of his will that defies physics by creating matter out of thin air. As well as make contact with material on all planes, in all forms of matter, and the like.