Abyss-scale of the Kraken 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, Abyss-scale of the Kraken is Unlimited.
YGOPRODeck lists Abyss-scale of the Kraken for these formats: Duel Links, Common Charity, TCG, OCG, Master Duel.
Abyss-scale of the Kraken belongs to the Mermail archetype—use that tag when searching for engine pieces and tech options.
A listed print of Abyss-scale of the Kraken appears in Abyss Rising (ABYR-EN056) at Common rarity.
Among markets shown on this page, the lowest listed snapshot for Abyss-scale of the Kraken is about $0.20 on Amazon (prices change frequently).
