Plant Food Chain is a Normal 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, Plant Food Chain is Unlimited.
YGOPRODeck lists Plant Food Chain for these formats: Duel Links, Common Charity, Edison, TCG, OCG, Master Duel.
A listed print of Plant Food Chain appears in Battle Pack 3: Monster League (BP03-EN212) at Common rarity.
Among markets shown on this page, the lowest listed snapshot for Plant Food Chain is about $0.14 on TCGPlayer (prices change frequently).
