[He amuses himself with the idea of all of the things he can transmute and flops back onto the bed.]

Oh! Yeah! The doorway! The stairwell we found!

Before I got abducted, I dove into the flood and swam down to the doorway!

It wasn't open but there was water or...blood or whatever. It was seeping in. It was getting pulled in through the cracks. There was definitely something back there!