Combined Maneuver - Engage Zero!

Effect

2 LIGHT and/or DARK monsters (This card is always treated as a "Sky Striker Ace" card.) You can only Special Summon "Combined Maneuver - Engage Zero!(s)" once per turn. Cannot be used as Link Material. If this card is Special Summoned: You can target 1 monster on the field with 2500 or more ATK; negate its effects until the end of this turn. At the start of the Damage Step, if this card attacks, while you have "Sky Striker Ace - Raye" and "Sky Striker Ace - Roze" in your GY: You can destroy all monsters your opponent controls.