Generation Shift 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, Generation Shift is Unlimited.
YGOPRODeck lists Generation Shift for these formats: Duel Links, Common Charity, Edison, TCG, OCG, Master Duel.
A listed print of Generation Shift appears in Dark Revelation Volume 4 (DR04-EN175) at Common rarity.
Among markets shown on this page, the lowest listed snapshot for Generation Shift is about $0.10 on Cardmarket (prices change frequently).
