Berserk Scales is a Quick-Play 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, Berserk Scales is Unlimited.
YGOPRODeck lists Berserk Scales for these formats: Duel Links, Speed Duel, Common Charity, TCG, OCG, Master Duel.
A listed print of Berserk Scales appears in Galactic Overlord (GAOV-EN054) at Common rarity.
Among markets shown on this page, the lowest listed snapshot for Berserk Scales is about $0.03 on Cardmarket (prices change frequently).
