Summer Sea Corsair (RotK) says: "Response: After Summer Sea Corsair comes out of Shadows, reveal 1 card from the top of your deck for each Smuggler character you control. Choose 1 revealed card and add it to your hand. Then, shuffle the rest back into your deck".
If SSC is the only Smuggler character I control when he comes out of Shadows, then I reveal the top card of my deck and place it into my hand.
My question is: At that point: must I shuffle my deck / may I shuffle my deck / am I not allowed to shuffle my deck?
Thanks!