His control is so brilliant and now benefits from players making the effort to buzz around him. He and Bernardo, gundo, cancelo, Phil, and kev are like a pack of ghosts materializing and disappearing in new places. And because they’re all excellent on the ball they can retain possession and better wait for/create the moment of opponent weakness. Their quality and confidence gives them patience.
The kdb goal happens in part because mahrez takes a so-so floated ball and has the sense and skill to do an exquisite little turn away to recycle rather than a clunky attempt at a cross or whatever.