[SCD] Scrap Fist

(1) Target 1 “Junk Warrior” you control; during this turn, if that monster attacks or is attacked by your opponent’s monster, apply all of the following effects.
-Your opponent cannot activate cards or effects until the end of the Damage Step.
-If it attacks a Defense Position monster, inflict piercing battle damage to your opponent.
-Double all Battle Damage you opponent would receive.
-It cannot be destroyed by battle.
-Destroy that opponent’s monster at the end of the Damage Step.