Card Rules: Rulings powered by The Netrep API. You choose the monster to receive the DEF increase when you activate this card. This card targets. If you activate two 'Castle Walls' on the same monster, its DEF increases by 1000.
Set: Starter Deck Kaiba
Card Number: SDK-049
Card Text: Increase a selected monster's DEF by 500 points during the turn this card is activated.
Card Type: Normal Trap
Name: Castle Walls