Concussion Warrior - Ultimo

{{CardTable
 * extimage=
 * image=
 * attribute=Dark
 * level=-6
 * sets=Duelist Pack: Shadow Drone
 * desc=
 * type=Warrior
 * type2=Dark Synchro
 * type3=Effect
 * lore=Once per turn, while in attack position, discard a card from your hand to your graveyard to destroy all defense position monsters and face-down spell and traps. You cannot attack on the turn when you activated the effect.