Turbo Warrior

Level 6 WIND/Warrior Synchro Effect
2500 ATK / 1500 DEF

"Turbo Synchron" + 1 or more non-Tuner monsters
When this card declares an attack on a Level 6 or higher Synchro Monster: Halve the ATK of the attack target until the end of the Damage Step. This card cannot be targeted by the effects of Level 6 or lower monsters.

Rulings – Yugipedia

Printings:

Collectible Tins 2008 Wave 2: CT05-EN004 (Secret Rare) - 2008-11-03
Crossroads of Chaos: CSOC-EN038 (Ultimate Rare) - 2008-11-18
Crossroads of Chaos: CSOC-EN038 (Ultra Rare) - 2008-11-18
Duelist Pack: Yusei: DP08-EN015 (Rare) - 2009-02-24
Legendary Collection 5D's Mega Pack: LC5D-EN033 (Common) - 2014-10-23

Prices:

Cardmarket: 0.71 €
TCGplayer: $ 0.75