Cynet Universe is a Field Spell Card.
Spell Cards are usually activated from the hand on your turn unless their type gives another timing window.
On the current TCG and OCG Forbidden & Limited lists tracked here, Cynet Universe is Unlimited.
YGOPRODeck lists Cynet Universe for these formats: Common Charity, TCG, OCG, Master Duel.
A listed print of Cynet Universe appears in Starter Deck: Codebreaker (YS18-EN022) at Common rarity.
Among markets shown on this page, the lowest listed snapshot for Cynet Universe is about $0.05 on Cardmarket (prices change frequently).
