Gladiator Beast's Battle Gladius 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, Gladiator Beast's Battle Gladius is Unlimited.
YGOPRODeck lists Gladiator Beast's Battle Gladius for these formats: Duel Links, Common Charity, Edison, TCG, OCG, Master Duel.
Gladiator Beast's Battle Gladius belongs to the Gladiator Beast archetype—use that tag when searching for engine pieces and tech options.
A listed print of Gladiator Beast's Battle Gladius appears in Gladiator's Assault (GLAS-EN056) at Common rarity.
Among markets shown on this page, the lowest listed snapshot for Gladiator Beast's Battle Gladius is about $0.15 on Cardmarket (prices change frequently).
