Laval Blaster

Level 4 FIRE/Warrior Effect
1200 ATK / 800 DEF

When this card is Normal Summoned, if you have a "Laval" monster in your Graveyard other than "Laval Blaster": You can choose a number from 1 to 5, then send that many cards from the top of your Deck to the Graveyard; this card gains 200 ATK for each "Laval" monster sent to the Graveyard to activate this effect.

Rulings – Yugipedia

Printings:

Duel Terminal 6b: DT06-EN072 (Duel Terminal Normal Parallel Rare) - 2012-05-25
Hidden Arsenal 6: Omega Xyz: HA06-EN036 (Super Rare) - 2012-07-24

Prices:

Cardmarket: 0.36 €
TCGplayer: $ 0.22