The NZ batsmen will be having fractured sleep patterns as they unpick their first innings malpractice. All the demons of uncertain footwork festered against Shah and left them caught between awkward defence or lunging strokeplay, and as that frailty compounded, the leggie speared in for the kill.
Trying to pick Shah or Yadav out of their hand is hard enough even with the advantages of giant television screens and replays, and many former test players in commentary struggle to come up with answers about deliveries from the duo.
But if spinners' hands are a blur, any batting coach worth his rupees should teach his charges to use their footwork to deal decisively with deliveries on length. Get to the pitch of deliveries to foil the spin or go deep in the crease when he drops it short and look to score regular singles.
Any batsmen who let such talented spinners as Shah or Yadav settle into a groove may as well put out the 'help yourself to my wicket' signs.
Those invitations were too prevalent in Dubai as wavering shot selection and tremulous footwork told of mental anguish.
Theories about winning the toss and batting first panned out for NZ in their narrow opening test win in Abu Dhabi, then Pakistan's response in Dubai, but NZ can't rely on a coin toss or the current state and make-up of their batting to stay in the scrap for the decider back in Abu Dhabi.