Skull Dice Prismatic Secret Rare - Yu-Gi-Oh! Video Game Promotional Cards Unlimited

Roll 1 six-sided die. The result is multiplied by 100 points and subtracted from the ATK and DEF of all monsters in your opponent's control until the end of your turn. Monsters summoned after this card's activation are excluded.
This card is a promotional card obtained in the European English release of the Yu-Gi-Oh! The Sacred Cards video game.