If this card you control would be used as Synchro Material, you can treat it as a non-Tuner. If this card is Normal or Special Summoned: You can Special Summon 1 "Chaospawn Bishop" from your hand, Deck, or GY, and if you do, it becomes LIGHT, also for the rest of this turn, you cannot Special Summon, except LIGHT or DARK monsters, and you cannot Special Summon from the Extra Deck, except Synchro Monsters. You can only use this effect of "Chaospawn Bishop" once per turn.