Vessel for the Dragon Cycle 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, Vessel for the Dragon Cycle is Unlimited.
YGOPRODeck lists Vessel for the Dragon Cycle for these formats: Common Charity, TCG, OCG, Master Duel.
Vessel for the Dragon Cycle belongs to the Tenyi archetype—use that tag when searching for engine pieces and tech options.
A listed print of Vessel for the Dragon Cycle appears in 2020 Tin of Lost Memories Mega Pack (MP20-EN131) at Common rarity.
Among markets shown on this page, the lowest listed snapshot for Vessel for the Dragon Cycle is about $0.11 on Cardmarket (prices change frequently).
