Digit Jamming

If there is a monster(s) with 1000 or more ATK on the field, during damage calculation of a battle between monsters: All monsters on the field lose 1000 ATK for every 1000 ATK they have, and lose 1000 DEF for every 1000 DEF they have. If this card is destroyed: All monsters on the field lose 1000 ATK for every 1000 ATK they have, and lose 1000 DEF for every 1000 DEF they have, until the end of the turn.