Red Wyvern

Level 6 FIRE/Dragon Synchro Effect
2400 ATK / 2000 DEF

1 Tuner + 1 or more non-Tuner monsters
During either player's turn, if a monster with higher ATK than this Synchro Summoned card is on the field: You can destroy the 1 face-up monster on the field that has the highest ATK (your choice, if tied). This effect can only be used once while this card is face-up on the field.

Rulings – Yugipedia

Printings:

High-Speed Riders: HSRD-EN022 (Secret Rare) - 2015-10-01
Duelist Pack: Dimensional Guardians: DPDG-EN032 (Common) - 2017-05-25

Prices:

Cardmarket: 0.19 €
TCGplayer: $ 0.39