Buster Blader, the Dragon Destroyer Swordsman

1 "Buster Blader" + 1 Dragon-Type monster Must be Fusion Summoned and cannot be Special Summoned by other ways. This card cannot attack directly. This card gains 1000 ATK and DEF for each Dragon-Type monster your opponent controls or is in their Graveyard. Change all Dragon-Type monsters your opponent controls to Defense Position, also Dragon-Type monsters in your opponent's possession cannot activate their effects. If this card attacks a Defense Position monster, inflict piercing battle damage to your opponent.