Legion Commander is one of the most hated heros currently in Dota 2. She's overpowered, but only if she gets fed and gets her duel wins. Snowball well young ones.

Your best lane partners are: Crystal Maiden, Lion, Shadow Shamen, Enigma, and other stunning support heros.

Crystal Maiden is one of the most useful heros to have on your team, as Legion Commander is often hard pressed for mana.