Cynet Regression 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, Cynet Regression is Unlimited.
YGOPRODeck lists Cynet Regression for these formats: Common Charity, TCG, OCG, Master Duel.
A listed print of Cynet Regression appears in Genesis Impact (GEIM-EN057) at Rare rarity.
Among markets shown on this page, the lowest listed snapshot for Cynet Regression is about $0.03 on Cardmarket (prices change frequently).
