Abyss-scale of Cetus

Equip Spell

Equip only to a "Mermail" monster. It gains 800 ATK. When a Trap effect that was activated on your opponent's side of the field resolves, negate that effect, then send this card to the Graveyard.

Rulings – Yugipedia

Printings:

Cosmo Blazer: CBLZ-EN061 (Common) - 2013-01-25

Prices:

Cardmarket: 0.32 €
TCGplayer: $ 0.18