It is a cool and entertaining map, but as Kino said, some units are too overpowered. You should make custom and stronger units for the human race, e.g. more powerful casters, flying untis, etc. Also, improve the terrain.
The learning icon, when you select the heroic spells, of Alvareux, does not work, you should import the disabled icon, and fix the path: ReplaceableTextures\CommandButtonsDisabled\ then the disabled icon's name comes, without the \. Also, after the first cinematic, the game camera does not reset. After the cinematic, make a trigger which resets the game camera for player red.
You should keep this map up, becasue it is not bad, in fact, it is good. 5/5 to encourage you, just fix the gameplay, and the icon.