Blackwing - Gale the Whirlwind (BLCR-EN056) - Battles of Legend: Crystal Revenge 1st Edition

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.