Sacred Sword of Seven Stars is a Normal 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, Sacred Sword of Seven Stars is Unlimited.
YGOPRODeck lists Sacred Sword of Seven Stars for these formats: Duel Links, Common Charity, TCG, OCG, Master Duel.
A listed print of Sacred Sword of Seven Stars appears in 2014 Mega-Tin Mega Pack (MP14-EN042) at Super Rare rarity.
Among markets shown on this page, the lowest listed snapshot for Sacred Sword of Seven Stars is about $0.27 on TCGPlayer (prices change frequently).
