Xiangke and Xiangsheng

At the beginning of the Duel, add Pendulum Zones to your field. The following effect can be used once per Duel. Add 1 "Odd-Eyes" Pendulum Monster with 2500 ATK or lower from your hand to your Extra Deck face-up, and place 1 "Xiangke Magician" and 1 "Xiangsheng Magician" to your Pendulum Zones from your hand/Deck. Then, change the Pendulum Scale of "Xiangsheng Magician" in your Pendulum Zone to 8. This Skill can only be used/applied if you begin the Duel with a Deck (excluding Extra Deck) that contains at least 5 Level 4 and 5 Level 7 monsters and contains no monsters other than "Performapal" or "Odd-Eyes" monsters, or "Magician" Pendulum Monsters.