Siege Onager
Age	Imperial Age
Trained at	Siege Workshop
Type	Siege Unit
Cost	160 Wood, 135 Gold
HP	70
Attack	75
Range	8
Armor	0
Pierce Armor	8
Speed	Slow
Upgraded From	Onager
Upgraded To	N/A

The Siege Onager is an improved form of the Onager in Age of Empires II. Like the Trebuchet, the Siege Onager can attack trees to eliminate them, thus plowing through forests. It is more effective at this task than the Trebuchet due to its large area of attack. It has more hitpoints, attack, and armor than the Onager, and like its lesser cousins may be used very effectively against infantry or archers. Aside from the different statistics and cosmetic look, Siege Onagers are the same as Onagers in design and function. Siege Onagers are only available to the Aztecs, Celts, Koreans, Mongols, Saracens, and Teutons.

Unit Evolution: Mangonel
Mangonel --> Onager --> Siege Onager

Age of Empires II Units
Age of Empires
Monk · Villager · Trade Cart · Trade Cog · Fishing Ship · Transport Ship
Infantry	Militia · Man-at-Arms · Long Swordsman · Two-Handed Swordsman · Champion · Spearman · Pikeman · Halberdier · Eagle Warrior · Petard · Archer · Crossbowman · Arbalest · Skirmisher · Elite Skirmisher · Hand Cannoneer
Cavalry	Scout Cavalry · Light Cavalry · Hussar · Knight · Cavalier · Paladin · Camel · Heavy Camel · Cavalry Archer · Heavy Cavalry Archer
Siege Weapons	Battering Ram · Capped Ram · Siege Ram · Mangonel · Onager · Siege Onager · Scorpion · Heavy Scorpion · Bombard Cannon · Trebuchet
Navy	Galley · War Galley · Galleon · Fire Ship · Fast Fire Ship · Demolition Ship · Heavy Demolition Ship · Cannon Galleon · Elite Cannon Galleon
Unique Units	Jaguar Warrior · Longbowman · Cataphract · Woad Raider · Chu Ko Nu · Throwing Axeman · Huskarl · Tarkan · Samurai · War Wagon · Turtle Ship · Plumed Archer · Mangudai · War Elephant · Mameluke · Conquistador · Missionary · Teutonic Knight · Janissary · Berserk · Longboat
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