Emissarite's Gladius

From publisher blurb: The Phoenix Guard is the military arm of the Cult of the Emissary, a zealous offshoot of the Sanguine Covenant. Their most devout members are often awarded gifts for their service and dedication: magical blades that sap an opponent’s mettle to increase the wielder’s might. They are often found in the hands of Phoenix Guard officers as they lead their forces against those that would oppose the will of the Emissary.