Masteria Expansions, Names and the proof for each

It's part of the skirt.

 Spoiler

It looks like a one-handed Crossbow, I really think it's a Crossbow and not a Pistol. Windreavers were ranged characters, so it might be some sort of Windreaver ghost/zombie/evil side.

The monster looks like one of those Warcraft elves, female, the color scheme looks close to the Raven Ninja clothing, but I don't think they're related.

I really want to know why it's hand is glowing.

I figure one of two things:
a)Thats either a mage and thats a new type of weapon
or b)They are not a mage and thats a shield.

Mad ramblings about option b)

 Spoiler

If that was by chance a one handed crossbow and She is holding a shield, would that be made available?
What would the consiquences of using a shield?
High STR requirements, lower accuracy?
If a bowman was given the option of holding a shield that gave def at a cost of accuracy, would they take it?