Golden Castle of Stromberg (anime)

Golden Castle Of Stromberg Spell Field When this card is first played you may summon one Level 4 monster from your deck. This card cannot be destroyed by magic,trap,or monster effects. At the beginning of each turn both player's monsters are forced to attack, afterwards the attacking player loses lifepoints equal to half of his/her monster's attack power. Then the attacking monster is destroyed. At the beginning of the cardholder's turn the opposing player must send half of their deck to the graveyard. If this cannot be done this card is destroyed. Note: this is a anime only card.

Anime During the final duel of the KC Grand Championship Leon Von Schroder played this card. When it was activated a extremely deadly virus created by his brother, Zigfried Von Schroder was released. Only once Yami-Yugi used Royal Straight Slasher's special ability was this card able to be destroyed. This was because he had only 1 card left in his deck making it impossible to send half of it to the graveyard thus destroying the Golden Castle of Stromberg and the virus being ceased.