Lavalval Chain
[SeaSerpent/Xyz/Effect]
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 GY.
●Choose 1 monster from your Deck and place it on top of your Deck.
ATK/1800 DEF/1000