Hearthpwn

I think that if you want to use Mogor, he is best utilized in a deck with a lot of weapons in it. Because weapons are not affected by Mogor, you can clear out opposing minions that yours might accidentally, and reduce the chances that your own minions trade unfavorably. Additionally, most classes that have plenty of weapons (Warrior and Paladin) also tend to have cards that give you plenty of life, which makes taking hits to the face through taunt, usually, not a problem. Even though this card is better  in those classes, I still think that there are stronger cards to include in a Warrior or Paladin deck. In arena, I would consider this an above average card if you have plenty of weapons, otherwise, I would value it at exactly average.