Crystal Release is a Equip 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, Crystal Release is Unlimited.
YGOPRODeck lists Crystal Release for these formats: Duel Links, Speed Duel, Common Charity, Edison, TCG, OCG, Master Duel.
Crystal Release belongs to the Crystal Beast archetype—use that tag when searching for engine pieces and tech options.
A listed print of Crystal Release appears in Duelist Pack: Jesse Anderson (DP07-EN019) at Super Rare rarity.
Among markets shown on this page, the lowest listed snapshot for Crystal Release is about $0.06 on Cardmarket (prices change frequently).
