Junk Box 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, Junk Box is Unlimited.
YGOPRODeck lists Junk Box for these formats: Duel Links, Common Charity, Edison, TCG, OCG, Master Duel.
Junk Box belongs to the Junk archetype—use that tag when searching for engine pieces and tech options.
A listed print of Junk Box appears in Raging Battle (RGBT-EN052) at Common rarity.
Among markets shown on this page, the lowest listed snapshot for Junk Box is about $0.15 on Cardmarket (prices change frequently).
