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Equip only to a "Mermail" monster. It gains 800 ATK. When the effect of a Trap Card that was activated on your opponent's side of the field resolves, negate that effect, then send this card to the Graveyard.
Unlimited
NM
$0.25
$0.10
LP
$0.18
$0.12
MP
$0.14
HP
$0.15
DM
$0.75
1st Edition
$0.33
$0.17
$0.13
$0.03
$1.48