Numbers Overlay Boost 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, Numbers Overlay Boost is Unlimited.
YGOPRODeck lists Numbers Overlay Boost for these formats: Duel Links, Common Charity, TCG, OCG, Master Duel.
A listed print of Numbers Overlay Boost appears in Shadow Specters (SHSP-EN071) at Common rarity.
Among markets shown on this page, the lowest listed snapshot for Numbers Overlay Boost is about $0.07 on Cardmarket (prices change frequently).
