Elemental HERO Plasma Vice

"Elemental Hero Sparkman" + "Elemental Hero Bladedge" This monster cannot be Special Summoned except by Fusion Summon. During battle between this attacking card and a Defense Position monster whose DEF is lower than the ATK of this card, inflict the difference as Battle Damage to your opponent. By discarding 1 card from your hand, destroy 1 monster in Attack Position your opponent controls.