The question what do you want to target with this. There are several good targets right now. Like corrupted Strongman, Clown(you can do it with innervate), Greybough or Prime. It even not bad with corrupted version of 3 mana dragon

DR Hunter in Duels has a lot of DR cards and you will have just one or two of these so if you are lucky you can slow down DR hunter for a turn.

Doesn’t look these new hero powers can beat current T1(Outcast DH, Discard Warlock and DR Hunter)
So on 6+ wins you are going to face the same decks. Shaman and rouge probably will be a bit better but paladin and priest are still going to be worst

Ultimate answer to Rattlegore(or any other big deathrattle) but also good against many cards with good effects. So you can steal some cards from your opponent and then steal minion that synergies with that cards, i.e secrets and Hanar

Looks like support card for Zixor prime. With this one and with Nine Lives you can shuffle several primes to your deck and you also have Scavenger’s Ingenuity to draw beast and Diving Gryphon to draw rush minions. Only rouge can counter this effectively with Flik

Priest have a lot of cheap buff\debuff\removal spells so on turn 4 or 5 it is about 50% to get something to chain the effect and on turn 9-10 it is possible to do crazy things sometimes. Also don’t forget about Kaelthas. Definitely will try to pull some of that crazy turns that were possible with Lyra
Maybe they will add something to benefit from casting a lot of spells for priest

Good arena card

Strange card for dragons based expansion. I guess Mech Hunter can try to use it but I don’t see that archetype to be viable

This is going to work great with new rogue legendary dragon