A cute trick. Zenos is mid-wheel - continuing the spin his previous strike started, intent on bringing the business end, rather than the haft, to face his opponent, hoping to catch him before he can regain his footing - when the marble explodes, flooding his vision with white light, and so the swing that comes is wild rather than targeted, a sweep in the direction he thinks Wrathion is in (quite literal blind hope) which is likely all too easy to avoid.

He pulls back with a snarl of frustration, waiting for his vision to clear.