Back to the Front 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, Back to the Front is Unlimited.
YGOPRODeck lists Back to the Front for these formats: Common Charity, TCG, OCG, Master Duel.
A listed print of Back to the Front appears in 2-Player Starter Set (STAS-EN040) at Common rarity.
Among markets shown on this page, the lowest listed snapshot for Back to the Front is about $0.06 on Cardmarket (prices change frequently).
