Number 47: Nightmare Shark

Level 3 WATER/Sea Serpent Xyz Effect
2000 ATK / 2000 DEF

2 Level 3 monsters
When this card is Special Summoned: You can attach 1 Level 3 WATER monster from your hand or your side of the field to this card as an Xyz Material. Once per turn: You can detach 1 Xyz Material from this card, then target 1 WATER monster you control; this turn, that monster can attack your opponent directly, also other monsters cannot attack.

Rulings – Yugipedia

Printings:

Yu-Gi-Oh! ZEXAL Volume 4 promotional card: YZ04-EN001 (Ultra Rare) - 2014-01-07
2014 Mega-Tins: CT11-EN004 (Super Rare) - 2014-08-28

Prices:

Cardmarket: 1.74 €
TCGplayer: $ 0.71