Yu-Gi-Oh! Duel Monsters

Sinister Secrets (Part 2 of 3) (5x13)

Air date: Mar 24, 2004

Zigfried does not seem content with just his brother's victory in this duel. To ensure things go that way, the card he gave to Leon, The Golden Castle of Stromburg, an illegal card, has been modified to force the duelist's monsters to battle and cause Yugi's own creatures to self-destruct while Leon's remain untouched. In addition, to make things worse, Yugi has to put half his deck in the graveyard to keep it going, much to his distaste. Add to the fact that so long as the card does remain active, Kaiba's computer mainframe will be infected with an unstoppable virus, and you have a recipe for the ultimate disaster. Even Leon isn't happy with the arrangement, especially since it's cheating. However, Leon's pleas fall on Zigfried's deaf ears as he controls the duel from the balcony. However, Yugi promises that he'll help Leon destroy the castle somehow. But how can he destroy a card that can't be affected by traps and spells?