Closed Forest is a Field 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, Closed Forest is Unlimited.
YGOPRODeck lists Closed Forest for these formats: Duel Links, Common Charity, TCG, OCG, Master Duel.
A listed print of Closed Forest appears in Astral Pack One (AP01-EN021) at Common rarity.
Among markets shown on this page, the lowest listed snapshot for Closed Forest is about $0.76 on Cardmarket (prices change frequently).
