Your favorite hero...

Aranthir seemed like the best hero to me; he summons the virtually invincible monster, Avatar of Death. Excluding the Scything Sword, Death Harbingers, and Deadly Chill, he's incredibly powerful. During the campaign, no one could defeat him, and he didn't even need any buffs :) In the late game, he dominates with Deadly Strike, and paired with a Phoenix under Regeneration or Vampirism, he easily wipes out the enemy army.