Rainbow Bridge Bifrost 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, Rainbow Bridge Bifrost is Unlimited.
YGOPRODeck lists Rainbow Bridge Bifrost for these formats: TCG, OCG.
A listed print of Rainbow Bridge Bifrost appears in Magnificent Monsters (MAMO-EN023) at Secret Rare rarity.
Among markets shown on this page, the lowest listed snapshot for Rainbow Bridge Bifrost is about $0.32 on TCGPlayer (prices change frequently).
