When you put this creature into the battle zone, you may destroy 1 of your other creatures. If you do, your opponent chooses 1 of their shields. This creature breaks that shield.
When you put this creature into the battle zone, you may return 1 of your shields to your hand. However, you can't use the "Shield Trigger" of the returned shield. If you do, destroy 1 of your opponent's creatures.
Double Breaker