Counter-heroes in duel mode (3.1).

Anwen vs. Ossir. Ossir is not effective in defense against Anwen – this has been proven: diamond dragons in the center eliminate all archers from the first turn, then Anwen, with her magic, simultaneously attacks (Magic Bolt, preferably with a slowing effect) and heals (Regeneration on ents and unicorns). Anwen's druids are generally useless due to their small numbers; they are only needed to transfer mana to the hero. Ents and Dancers of Death/Wind eliminate half of the ents first, then all the unicorns (by this time, your unicorns should have finished off the ents...).