Lavalval Ignis

Level 3 FIRE/Warrior Xyz Effect
1800 ATK / 1400 DEF

2 Level 3 monsters
If this card attacks or is attacked, during the Damage Step (in either player's turn): You can detach 1 Xyz Material from this card once per battle; this card gains 500 ATK until the end of this turn.

Rulings – Yugipedia

Printings:

Duel Terminal 6b: DT06-EN087 (Duel Terminal Ultra Parallel Rare) - 2012-05-25
Hidden Arsenal 6: Omega Xyz: HA06-EN051 (Secret Rare) - 2012-07-24
Battle Pack 3: Monster League: BP03-EN120 (Shatterfoil Rare) - 2014-07-31

Prices:

Cardmarket: 0.49 €
TCGplayer: $ 0.37