Scramble Egg 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, Scramble Egg is Unlimited.
YGOPRODeck lists Scramble Egg for these formats: Duel Links, Common Charity, TCG, OCG, Master Duel.
A listed print of Scramble Egg appears in 2018 Mega-Tin Mega Pack (MP18-EN230) at Common rarity.
Among markets shown on this page, the lowest listed snapshot for Scramble Egg is about $0.05 on Cardmarket (prices change frequently).
