Lavalval Chain (PGL2-EN044) - Premium Gold: Return of the Bling Unlimited

2 Level 4 monsters // Once per turn: You can detach 1 Xyz Material from this card to activate 1 of these effects:
• Send 1 card from your Deck to the Graveyard.
• Choose 1 monster from your Deck and place it on top of your Deck.