Gem-Knight Topaz (HA05-EN021)

"Gem-Knight Tourmaline" + 1 "Gem-Knight" monster

Must first be Fusion Summoned with the above Fusion Material Monsters. This card can attack twice during each Battle Phase. When this card destroys a monster by battle and sends it to the Graveyard: Inflict damage to your opponent equal to the ATK of the destroyed monster in the Graveyard.

Thunder / Fusion / Effect, Hidden Arsenal 5: Steelswarm Invasion