Darkbright, HÉROS Élémentaire TAEV-FR042

"Sparkman, Elementary HERO" + "Necro, Elementary HERO" This monster cannot be Special Summoned except by a Fusion Summon. During a battle between this attacking card and a monster in Defense Position whose DEF is lower than this card's ATK, inflict the difference as battle damage to your opponent. If this card attacks, change it to Defense Position at the end of the Damage Step. If this card is destroyed, destroy 1 monster your opponent controls.