Poison Chain 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, Poison Chain is Unlimited.
YGOPRODeck lists Poison Chain for these formats: Duel Links, Common Charity, Edison, TCG, OCG, Master Duel.
Poison Chain belongs to the Iron Chain archetype—use that tag when searching for engine pieces and tech options.
A listed print of Poison Chain appears in Crossroads of Chaos (CSOC-EN053) at Common rarity.
Among markets shown on this page, the lowest listed snapshot for Poison Chain is about $0.09 on Cardmarket (prices change frequently).
