Dragon's Fighting Spirit 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, Dragon's Fighting Spirit is Unlimited.
YGOPRODeck lists Dragon's Fighting Spirit for these formats: Duel Links, TCG, OCG, Master Duel.
A listed print of Dragon's Fighting Spirit appears in Yu-Gi-Oh! The Dark Side of Dimensions Movie Pack (MVP1-EN007) at Ultra Rare rarity.
Among markets shown on this page, the lowest listed snapshot for Dragon's Fighting Spirit is about $0.20 on Cardmarket (prices change frequently).
