Nazgûl

Nazgûl is one of the Heroes available for Mordor. It can be recruited from the Citadel

It is one of the nine Nazgûls that ride the fellbeasts, searching for the ring.

Abilities
The Nazgûl screeches, getting nearby enemy units to flee.
 *  Screech 

Advantages
The Nazgûl is one of the most powerful units in Mordor's disposal. It can deal extremely high damage and even kill heroes really quickly. It can quickly traverse the map, as it is not being blocked by rivers and mountains. If there are troops on the ground, you can use Screech to drive the enemies away. It can quickly destroy buildings as well.

Disadvantages
Even though one of the most powerful units, you still need to be careful of archers and ranged hero units. One of the biggest dangers is Gandalf, as he can easily erase a Nazgûl's health with his Istari Light ability. In addition, all ranged heroes and all defensive towers can quickly lower its health, if not dealt with early.