Magician's Left Hand 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, Magician's Left Hand is Unlimited.
YGOPRODeck lists Magician's Left Hand for these formats: Common Charity, TCG, OCG, Master Duel.
A listed print of Magician's Left Hand appears in 2018 Mega-Tin Mega Pack (MP18-EN013) at Common rarity.
Among markets shown on this page, the lowest listed snapshot for Magician's Left Hand is about $0.09 on Cardmarket (prices change frequently).
