...I think it's a little obvious.

[Whoops, busted! No biggie - Michael drops his illusion. He looks awful, with ashen skin and sickly black veins just like the fallen elves dotting Yggdrasil, but if he realizes that he's on the road to petrification himself, he doesn't seem bothered.]

Hey, if you fell down all these stairs, would your bones all smash apart like a human's? [He smiles, an expression that absolutely does not reach his eyes.] I'm very curious.