Dice Dungeon - BLCR-EN005 Ultra Rare 1st Edition

When this card is activated: You can add 1 "Dimension Dice" from your Deck to your hand. At the start of the Battle Phase: You can make each player roll a six-sided die and apply their result to all monsters they control until the end of this turn. ● 1: They lose 1000 ATK. ● 2: They gain 1000 ATK. ● 3: They lose 500 ATK. ● 4: They gain 500 ATK. ● 5: Their current ATK become halved. ● 6: Their current ATK become doubled.