He's humming a tune under his breath. Three beats, steady, and on the sixth he steps out and throws a small black object at the far edge of the dance floor. At least twenty feet from X, and Amy, but there are still a concentration of creatures over there.

'Cover your ears.'

It'll be a small explosion, but an explosion all the same.

'And duck.'

He turns so that his back is to it, shielding Amy from any flying debris.