YuGiOh 5D's Turbo Warrior CT05-EN004 Secret Rare Promo Card [Toy]
[Warrior/Synchro/Effect]    Turbo Synchron + 1 or more non-Tuner monsters.    When this card attacks a Level 6 or higher Synchro Monster, halve that monster's ATK until the end of the Damage Step.  This card cannot be targeted by the effects of Level 6 or lower monsters.