Thorn of Malice Common

Equip only to "Black Rose Dragon" or a Plant-Type monster. It gains 600 ATK. When it attacks a Defense Position monster whose DEF is lower than the ATK of this monster, inflict the difference as Battle Damage to your opponent. If it attacks a monster, that monster loses 600 ATK and DEF after damage calculation. An opponent's monster that battles with the equipped monster cannot be destroyed by that battle.