Ruthless Denial 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, Ruthless Denial is Unlimited.
YGOPRODeck lists Ruthless Denial for these formats: Duel Links, Edison, TCG, OCG, Master Duel.
A listed print of Ruthless Denial appears in Duelist Pack: Zane Truesdale (DP04-EN024) at Super Rare rarity.
Among markets shown on this page, the lowest listed snapshot for Ruthless Denial is about $0.30 on Cardmarket (prices change frequently).
