Core Compression 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, Core Compression is Unlimited.
YGOPRODeck lists Core Compression for these formats: Duel Links, Edison, TCG, OCG, Master Duel.
Core Compression belongs to the Koa'ki Meiru archetype—use that tag when searching for engine pieces and tech options.
A listed print of Core Compression appears in Ancient Prophecy (ANPR-EN052) at Super Rare rarity.
Among markets shown on this page, the lowest listed snapshot for Core Compression is about $0.43 on Cardmarket (prices change frequently).
