Like all La Vaule (S) NM Level 69 Weapons, you'll need the Supremacy Earring to get the full "Set:" effect. The earring drops from the BCNM that is granted access if you defeat all 8 NMs in La Vaule and trade the 100% StrongBox items in to a NPC Named Lurouillat in Southern San d'Oria (S).
Those items also benefit San d'Oria in Campaign. Look up the quest called "Sealed Containers."
Seems to be about on par with HQ staves on dmg but you don't get the magic accuracy (Tested vs aquillos). Probably only worth it if you have relic gloves and the magic burst earring and even then I'd recommend only using it with eseal.
