Abyss-scale of the Mizuchi

Equip Spell

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.

Rulings – Yugipedia

Printings:

Lord of the Tachyon Galaxy: LTGY-EN064 (Common) - 2013-05-17
2014 Mega-Tin Mega Pack: MP14-EN040 (Common) - 2014-08-28

Prices:

Cardmarket: 0.16 €
TCGplayer: $ 0.32