You can only activate this card when your opponent successfully Normal Summons, Flip Summons, or Special Summons a monster. As long as that monster remains face-up on the field, the original ATK of the monster is halved.
Near Mint / Lightly Played Unlimited - $1.00
Moderately Played Unlimited - $1.00
Heavily Played Unlimited - $1.00
Damaged Unlimited - $0.50
Near Mint / Lightly Played 1st Edition - $1.50
Moderately Played 1st Edition - $1.50
Heavily Played 1st Edition - $1.00
Damaged 1st Edition - $1.00