Number C73: Abyss Supra Splash

Level 6 WATER/Warrior Xyz Effect
3000 ATK / 2000 DEF

3 Level 6 monsters
If a monster you control battles an opponent's monster, during damage calculation (in either player's turn): You can detach 1 Xyz Material from this card once per battle; your battling monster gains ATK equal to the ATK of the opponent's monster it is battling, during that damage calculation only. If this card has "Number 73: Abyss Splash" as Xyz Material, it gains this effect.
● This card cannot be destroyed by card effects.

Rulings – Yugipedia

Printings:

Dragons of Legend: DRLG-EN041 (Super Rare) - 2014-04-25
Dragons of Legend: The Complete Series: DLCS-EN043 (Common) - 2020-09-10

Prices:

Cardmarket: 0.23 €
TCGplayer: $ 0.33