Neos Force is a Equip 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, Neos Force is Unlimited.
YGOPRODeck lists Neos Force for these formats: Duel Links, Common Charity, Edison, Speed Duel, TCG, OCG, Master Duel.
Neos Force belongs to the Elemental HERO archetype—use that tag when searching for engine pieces and tech options.
A listed print of Neos Force appears in Legendary Collection 2: The Duel Academy Years Mega Pack (LCGX-EN096) at Common rarity.
Among markets shown on this page, the lowest listed snapshot for Neos Force is about $0.30 on TCGPlayer (prices change frequently).
