Counterbalance



Continuous Spell Card

''After activation, all face-up monsters on your opponent's field become Machine-Type and their ATK is reduced by 500. While this card is face-up on the field increase the ATK of "Robotic Knight", "Machine King" and "Perfect Machine King" by 500.''

Rulings

 * This card's effect resolves at the very end of the turn, before the players change turns.