Equip only to a "Mermail" monster. It gains 800 ATK. When a Spell effect that was activated on your opponent's side of the field resolves, negate that effect, then send this card to the Graveyard.
Like New Unlimited - $1.40
Like New 1st Edition - $1.10
Light Played Unlimited - $1.00
Light Played 1st Edition - $0.80
Heavy Played Unlimited - $0.60
Heavy Played 1st Edition - $0.50