Gunkan Sushipyard Seaside Supper Spot

Once per turn, if you Normal or Special Summon a "Gunkan" monster(s), even during the Damage Step: You can place 1 "Gunkan" card from your Deck on top of your Deck. Once per turn, if a face-up "Gunkan" monster(s) you control that was Special Summoned from the Extra Deck is sent to your GY by an opponent's card: Activate this effect; your opponent pays LP exactly equal to that monster's DEF in the GY, then you can apply this effect.
● Special Summon 1 "Gunkan Suship Shari" from your hand, then Special Summon 1 "Gunkan" Xyz Monster from your Extra Deck, by using that card you control as material. (This is treated as an Xyz Summon.)