Fortress: Choose one of your shields and attach this card to fortify that shield. When the fortified shield leaves the shield zone, put this card into the graveyard. (Use "Shield Trigger" abilities before putting this card into the graveyard.)
Your creatures win all battles.
If the fortified shield isn't fortified by any other fortresses, whenever the fortified shield would be broken by your opponent's creatures, you may return 1 of your other shields to your hand instead.