Bark of Dark Ruler is a Normal Trap Card.
Trap Cards are normally Set first and can be activated on a later turn, often in response to an action.
On the current TCG and OCG Forbidden & Limited lists tracked here, Bark of Dark Ruler is Unlimited.
YGOPRODeck lists Bark of Dark Ruler for these formats: GOAT, OCG GOAT, Duel Links, Speed Duel, Common Charity, Edison, TCG, OCG, Master Duel.
A listed print of Bark of Dark Ruler appears in Battle Pack 3: Monster League (BP03-EN191) at Common rarity.
Among markets shown on this page, the lowest listed snapshot for Bark of Dark Ruler is about $0.08 on TCGPlayer (prices change frequently).
