Saruman

Saruman is one of the Heroes available for Isengard. He can be recruited from the Citadel.

He is the leader of Isengard and one of the five Istari.

Abilities
Saruman blasts away enemy forces. Saruman fires a blast of energy at the enemy. Saruman temporary takes control of enemy units. Saruman gives selected allied units a boost on experience.
 *  Wizard Blast 
 *  Fireball  (Rank 2)
 * Wormtongue (Rank 4)
 *  Speech Craft  (Rank 5)

Advantages
Saruman is one of the most powerful units of Isengard. He can quickly kill units due to his damage and clearing abilities. In addition, his abilities have low cooldown, so they can be used regularly. His Wormtongue ability can clear up a battlefield filled with enemy units, by temporarily taking control of some enemy units.

Disadvantages
Saruman might be one of the most powerful, but he is also the most expensive unit. With a cost of 5000 resources, he is going to be one of the latest units you are going to get. He is also pretty weak, when it comes to his health, as a few consecutive hits can kill him, especially by heroes.