Tistina, the Divinity that Defies Darkness (Ultra Rare)

2 Level 10 monsters
If this card is Special Summoned: You can send all face-down cards your opponent controls to the GY. You can only use this effect of Tistina, the Divinity that Defies Darkness once per turn. Once per turn, if this card has Crystal God Tistina as material: You can detach 1 material from this card; it gains 2000 ATK until the end of your opponent's turn. If this card you control is destroyed by an opponent's card while it has material: You can Special Summon 1 Tistina monster from your GY.