Is this a good elemental hero deck and would it be good in duels with other decks (i.e. blackwing,six sam)?

in my opinion yoan is wrong and that this is not a bad deck. it could be a beast deck and if you keep your cards to 40 wouldn't you run out of cards quicker and that you would loose. that's why the limit now is 60 not 40...however try to keep it at a nuetral and resonable amount (chances)