Number 73: Abyss Splash

Level 5 WATER/Warrior Xyz Effect
2400 ATK / 1400 DEF

2 Level 5 WATER monsters
Once per turn, during either player's turn: You can detach 1 Xyz Material from this card; double this card's ATK until the end of your opponent's turn, also, any battle damage it inflicts to your opponent this turn is halved.

Rulings – Yugipedia

Printings:

Dragons of Legend: DRLG-EN040 (Super Rare) - 2014-04-25
Dragons of Legend: The Complete Series: DLCS-EN042 (Common) - 2020-09-10

Prices:

Cardmarket: 0.19 €
TCGplayer: $ 0.33