That, that is - Potemkin can't hide it, without words his eyes widen and his mouth makes the barest of a frown - that is miraculous. Not out of the edge of belief, as somehow he's confident that Caren is completely honest, but pushing the very border of it.

"Particular experience, indeed," he says, clearly shaken a little. "I never expected their magic to be so powerful." Or anyone's magic.

Then he realizes the other implication of what she said. "...the second time?"