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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
$0.27
$0.08
LP
$0.14
$0.10
MP
$0.17
HP
$0.15
DM
$0.49
1st Edition
$0.28
$0.11
$0.13
$0.03
$1.48