Call of Darkness is a Continuous Trap Card.
Trap Cards are normally Set first and can be activated on a later turn, often in response to an action.
On the current TCG and OCG Forbidden & Limited lists tracked here, Call of Darkness is Unlimited.
YGOPRODeck lists Call of Darkness for these formats: OCG GOAT, Duel Links, Edison, TCG, OCG, Master Duel.
A listed print of Call of Darkness appears in Champion Pack: Game Six (CP06-EN006) at Rare rarity.
Among markets shown on this page, the lowest listed snapshot for Call of Darkness is about $0.43 on TCGPlayer (prices change frequently).
