Glaive

"Dating back to the time of the first Tenno, the GLAIVE is a uniquely deadly weapon. This multi-bladed disk is not only effective for melee combat it can also be thrown like a boomerang to cut down enemies at a distance."

- In-Game Description

Characteristics
Advantages:

Disadvantages:

Acquisition
The Glaive can be purchased for  150.

The Glaive blueprint can be acquired from Alert Missions with a [?] on the Reward list.(only proof is a forum post from DERebecca.)

Trivia

 * The Glaive was released on April 26th, 2013 with update 7.9.
 * The Glaive first appeared in DarkSector, another game made by Digital Extremes.