Elemental HERO Darkbright

[ Warrior / Fusion / Effect ] "Elemental HERO Sparkman" + "Elemental HERO Necroshade" Must be Fusion Summoned. If this card attacks a Defense Position monster, inflict piercing battle damage. If this card attacks, change it to Defense Position at the end of the Damage Step. If this card is destroyed: Target 1 monster your opponent controls; destroy that target. ATK/ 2000 DEF/ 1000