Cynet Mining is a Normal 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 Mining is Unlimited.
YGOPRODeck lists Cynet Mining for these formats: Common Charity, TCG, OCG, Master Duel.
A listed print of Cynet Mining appears in 2020 Tin of Lost Memories Mega Pack (MP20-EN072) at Super Rare rarity.
Among markets shown on this page, the lowest listed snapshot for Cynet Mining is about $0.12 on Cardmarket (prices change frequently).
