As the shadows around Tyrion thickened further, so too did the numbers of harpies in Ulthuan increase. They were drawn to the slaughter like flies to dung, their cruel voices splitting the skies from the sight of blasted Anlec in the north to as far south as the border of Eataine and Yvresse. Even in those lands thus far untouched by Malekith's war, watches had been stiffened to prevent flocks of harpies stealing away children or the infirm. The Crows of Khaine, however, did not settle for such simple feasts, and followed Tyrion's host in the hopes of more succulent prey.
↑Vanguard Deployment: This unit can deploy in an expanded deployment area, allowing it to start the battle within striking distance of the enemy - or somewhere unexpected.
↑Very Fast: This unit can run circles around most other units, taunting and harrassing the enemy or evading its missile fire.
The Crows of Khaine are a remarkably tenacious harass unit because of their ability to regenerate when in melee. This makes it more difficult to break them or shake them off of your units. It also means them more durable then regular harpies. They do come at a cost and can be focused, isolated, and taken out by more elite units or missile fire.