Lightning Warrior

Level 7 LIGHT/Warrior Synchro Effect
2400 ATK / 1200 DEF

1 Tuner + 1 or more non-Tuner monsters
If this card destroys an opponent's monster by battle and sends it to the Graveyard: Inflict 300 damage to your opponent for each card in your opponent's hand.

Rulings – Yugipedia

Printings:

Shonen Jump December 2010 subscription bonus: JUMP-EN046 (Ultra Rare) - 2010-12-01
Turbo Pack: Booster Seven: TU07-EN007 (Rare) - 2012-01-01
Legendary Collection 5D's Mega Pack: LC5D-EN042 (Ultra Rare) - 2014-10-23

Prices:

Cardmarket: 0.50 €
TCGplayer: $ 0.52