Blackwing - Gale the Whirlwind [AP04-EN004] Super Rare

If you control a "Blackwing" monster other than Blackwing - Gale the Whirlwind, you can Special Summon this card (from your hand). Once per turn. You can target 1 face-up monster your opponent controls, that target's ATK and DEF become half its current ATK and DEF.