Scrap Fist [SDSE-EN024] Super Rare

Description

Target 1 “Junk Warrior” you control; this turn, if it battles an opponent’s monster, apply these 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 any battle damage your opponent takes.
It cannot be destroyed by battle.
Destroy that opponent’s monster at the end of the Damage Step.