During your Main Phase: You can change as many monsters your opponent controls as possible to face-down Defense Position, then you can send all face-up cards your opponent controls to the GY. If this card in its owner's possession is destroyed by an opponent's card: You can change as many monsters your opponent controls as possible to face-down Defense Position, then you can send all face-up cards your opponent controls to the GY. You can only use each effect of "Crystal God Tistina" once per turn.
![Crystal God Tistina [DUNE-EN089] Quarter Century Secret Rare | Card Merchant Takapuna](http://www.cardmerchanttakapuna.co.nz/cdn/shop/products/504980_67197f1e-9e2d-4772-aa8e-a054e7ff3cd1.jpg?v=1702647175)
