Deck Master: "Shinato, King of a Higher Plane"

You can only use this Skill's first and second effects once per Duel. 1: During your Main Phase, play 1 "Shinato, King of a Higher Plane" from outside your Deck in face-down Defense Position. (Its battle position can be changed.) 2: If you control "Shinato, King of a Higher Plane", change an Attack Position monster your opponent controls to Defense Position. Then, halve your opponent's LP.