Black Whirlwind (Green) [DL15-EN015] Rare 78 ) You can also Xyz

) You can also Xyz Summon this card by using "Number F0: Utopic Future" you control as material

the Ogdoadic King" once per turn

Set: HeartGold & SoulSilver: Black Star Promos Type: Psychic Rarity: Black Star Promo Retreat cost: Colorless

You can only use this effect of "Soul Servant" once per turn

Set: Wizards of the Coast: Black Star Promos Type: Colorless Rarity: Black Star Promo Retreat cost: Colorless

Black Whirlwind (Green) [DL15-EN015] Rare 78 ) You can also XyzSet: Duelist League Promo Card type: Continuous Spell Rarity: Rare When a "Blackwing" monster is Normal Summoned to your side of the Field: You can add 1 "Blackwing" monster from your Deck to your hand that has less ATK than that monster.