The Steppe Horse Raider is a Mercenary Cavalry Raider available at Mercenary Camp level 4. The previous mercenary of this type is the Assyrian Horse Raider. The next mercenary of this type is the Condottieri Raider.
"Mercenary cavalry raider, unusually good against resource buildings."
"Arguably the best light horse archers in history, under leaders like Genghis Kahn the Steppe horsemen conquered most of Asia and a good chunk of Europe and North Africa. Steppe horses wore the same lamellar armor as their riders, and the saddles and stirrups gave the riders a very steady platform from which to shoot. The horsemen's skill at archery was superb, and no other horsemen alive could match them."