Cybernetic Overflow 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, Cybernetic Overflow is Unlimited.
YGOPRODeck lists Cybernetic Overflow for these formats: Duel Links, Common Charity, TCG, OCG, Master Duel.
Cybernetic Overflow belongs to the Cyber Dragon archetype—use that tag when searching for engine pieces and tech options.
A listed print of Cybernetic Overflow appears in 2019 Gold Sarcophagus Tin Mega Pack (MP19-EN129) at Common rarity.
Among markets shown on this page, the lowest listed snapshot for Cybernetic Overflow is about $0.06 on Cardmarket (prices change frequently).
