Extra Pendulum 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, Extra Pendulum is Unlimited.
YGOPRODeck lists Extra Pendulum for these formats: TCG, OCG, Master Duel.
Extra Pendulum belongs to the Pendulum archetype—use that tag when searching for engine pieces and tech options.
A listed print of Extra Pendulum appears in 25th Anniversary Tin: Dueling Heroes Mega Pack (MP23-EN090) at Rare rarity.
Among markets shown on this page, the lowest listed snapshot for Extra Pendulum is about $0.12 on Cardmarket (prices change frequently).
