Dustflame Blast

Normal Trap

Banish all "Laval" monsters from your Graveyard; destroy any number of cards on the field, up to the number of monsters banished for this card's activation.

Rulings – Yugipedia

Printings:

Duel Terminal 6b: DT06-EN098 (Duel Terminal Normal Parallel Rare) - 2012-05-25
Hidden Arsenal 6: Omega Xyz: HA06-EN058 (Super Rare) - 2012-07-24

Prices:

Cardmarket: 0.28 €
TCGplayer: $ 0.14