The Chrono Keeper's Vanguard is a Spirit/Air Legendary Armor from the Epic BossTemprus. It is effective against Earth/Water armors, but it is ineffective against Earth/Fire armors. It is the first Spirit/Air Epic Boss Armor since Vesture of Qarin. It is also the 22nd Armor to beat the Moontide Platemail+.
The + version of this armor also surpasses the Regular version of the Beastmaster's Battlegear in terms of combined stats.