[REQUIREMENT] You can activate this if there are 10 or more cards in your Deck.
[EFFECT] Choose up to 3 Sea Serpent monsters in your GY and place them on the bottom of the Deck in any order. Also, you can choose 1 Level 4 or lower Sea Serpent monster in your GY and Special Summon it to your field in face-up Attack Position. Then, if there are no monsters in your GY, you can choose 1 Level 8 or lower face-up monster your opponent controls and destroy it.