Black Whirlwind is a Continuous Spell Card.
Spell Cards are usually activated from the hand on your turn unless their type gives another timing window.
On the current TCG and OCG Forbidden & Limited lists tracked here, Black Whirlwind is Unlimited.
YGOPRODeck lists Black Whirlwind for these formats: Duel Links, Common Charity, Edison, TCG, OCG, Master Duel.
Black Whirlwind belongs to the Blackwing archetype—use that tag when searching for engine pieces and tech options.
A listed print of Black Whirlwind appears in Battles of Legend: Armageddon (BLAR-EN060) at Ultra Rare rarity.
Among markets shown on this page, the lowest listed snapshot for Black Whirlwind is about $0.16 on Cardmarket (prices change frequently).
