Terminal World 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, Terminal World is Unlimited.
YGOPRODeck lists Terminal World for these formats: Common Charity, TCG, OCG, Master Duel.
A listed print of Terminal World appears in Quarter Century Stampede (RA04-EN148) at Platinum Secret Rare rarity.
Among markets shown on this page, the lowest listed snapshot for Terminal World is about $0.17 on TCGPlayer (prices change frequently).
