Brionac, Dragon of the Ice Barrier

Level 6 WATER/Sea Serpent Synchro Effect
2300 ATK / 1400 DEF

1 Tuner + 1+ non-Tuner monsters
You can discard any number of cards to the GY, then target the same number of cards your opponent controls; return those cards to the hand. You can only use this effect of "Brionac, Dragon of the Ice Barrier" once per turn.

Rulings – Yugipedia

Printings:

Hidden Arsenal: HA01-EN022 (Secret Rare) - 2009-11-05
Duel Terminal 1: DT01-EN031 (Duel Terminal Ultra Parallel Rare) - 2010-01-29
Hidden Arsenal 5: Steelswarm Invasion: Special Edition: H5SE-EN001 (Super Rare) - 2012-03-30
Gold Series: Haunted Mine: GLD5-EN031 (Gold Rare) - 2012-06-07
Duelist Saga: DUSA-EN073 (Ultra Rare) - 2017-03-30
Duel Devastator: DUDE-EN008 (Ultra Rare) - 2019-10-10
Structure Deck: Freezing Chains: SDFC-EN043 (Super Rare) - 2021-02-18
Hidden Arsenal: Chapter 1: HAC1-EN051 (Duel Terminal Ultra Parallel Rare) - 2022-02-24
Quarter Century Bonanza: RA03-EN227 (Platinum Secret Rare) - 2024-11-07
Quarter Century Bonanza: RA03-EN227 (Quarter Century Secret Rare) - 2024-11-07

Prices:

Cardmarket: 0.47 €
TCGplayer: $ 0.80