Saber Shark

Level 4 WATER/Fish Effect
1600 ATK / 1200 DEF

Cannot be used as a Synchro Material. Up to twice per turn: You can target 1 Fish-Type monster on the field, then activate 1 of these effects.
● Increase its Level by 1.
● Reduce its Level by 1.
You cannot Special Summon any monsters during the turn you activate this effect, except WATER monsters.

Rulings – Yugipedia

Printings:

Duelist Saga: DUSA-EN004 (Ultra Rare) - 2017-03-30
Legendary Duelists: Duels From the Deep: LED9-EN050 (Common) - 2022-06-16

Prices:

Cardmarket: 0.08 €
TCGplayer: $ 0.07