Fishborg Harpooner

Level 4 WATER/Fish Tuner Effect
400 ATK / 400 DEF

You can reveal this card and 1 WATER monster in your hand; Special Summon 1 of them and discard the other. You can only use this effect of "Fishborg Harpooner" once per turn. If this card is sent to the GY as material for a WATER Synchro Monster: You can negate the effects of 1 Effect Monster your opponent controls, until the end of this turn.

Rulings – Yugipedia

Printings:

Legacy of Destruction: LEDE-EN032 (Super Rare) - 2024-04-25
2025 Mega-Pack Tin: MP25-EN350 (Common) - 2025-09-04

Prices:

Cardmarket: 0.12 €
TCGplayer: $ 0.12