[REQUIREMENT] If your opponent has cards in your hand, you can activate this by changing all face-up Zombie Normal Monsters you control in Attack Position to face-up Defense Position.
[EFFECT] Randomly choose cards in your opponent’s hand equal to [The number of Zombie monsters you control in face-up Defense Position] and send them to the GY. Then, inflict 300 damage to your opponent x [The number of cards sent to the GY].