Hydro Genex

Level 6 WATER/Machine Synchro Effect
2300 ATK / 1800 DEF

"Genex Controller" + 1 or more non-Tuner WATER monsters
When this card destroys an opponent's monster by battle and sends it to the Graveyard, gain Life Points equal to the ATK of the destroyed monster.

Rulings – Yugipedia

Printings:

Duel Terminal 1: DT01-EN088 (Duel Terminal Ultra Parallel Rare) - 2010-01-29
The Shining Darkness: TSHD-EN095 (Super Rare) - 2010-05-07

Prices:

Cardmarket: 0.47 €
TCGplayer: $ 0.54