Well, there are various ways I could give it solidity, but it's only an illusion—I am altering the refraction of light, not actually transforming my body.

[ he lets the spell dissolve and is back to his normal appearance! ]

Metamorphosis is quite an interesting ability, though! Other than Djinn Equip, we do not have much in the way of such techniques in my world, but perhaps they will be discovered and refined eventually...

[ and then uh ?? ]

...What? Why would I die?