Detach 1 material from a monster on either field, and if you do, excavate the top 4 cards of your Deck, choose 1 of them, and apply the appropriate effect based on its card type, also place the rest on top of the Deck in the same order.
• Monster Spell: Add it to your hand.
• Trap: Set it. It can be activated this turn.
You can only activate 1 Puppet Shark per turn.