This is going to be a killer in Arena. As for constructed... eh, not sure if this fits anywhere. Of course it's still early, but I currently can't imagine a Druid deck with a focus on big minions or dragons for that matter. But who knows.
yeah most 4/8 taunts are 8 mana with another effect. This is 2 mana cheaper and still has a good effect. Plus it's a dragon with dragon synergies and stuff.
Holly fuck this was actually 6 mana I thought it was 8 mana didn't even check mana cost lol ahaha okay it changes everything this is really a good card lol there is no reason to check other cards this is good for many druid decks.
Potentially good/great in constructed depending on how dragon druid performs, but my god is this going to be nutso in arena. A well statted 6 drop that also lets you discover a lategame card, at a point where you're reaching lategame? Wowee.
Jesus, the power creep is insane...does anyone else get disappointed rather than excited seeing cards like this? Just...it's so blatantly better than so many cards that came before it. Discover cards are supposed to be like...less stats for the discover effect. This is just...ridiculous. Maybe it's just me and I'm old and crotchety
Ok let's break it down, because I have a few words to say about this.
First the minion itself. It has very solid combination of stats and effects. As a 4/8 Taunt it is very defensive tool and against Priest it is even better, because they can't deal with it easily. The discover effect is also good, giving you card advantage. As a dragon serves as an activator for other dragons or dragon related cards (such as the new Druid spell Breath of Dreams).
In Standard it is going to be very solid, because every class will have a dragon that discovers other dragons thus allowing it to jump from a dragon to dragon generating tons of value. In Arena it is going to be very good just because it discovers (we know that card draw there is limited in a way).
Finally I want to talk about Wild. When I saw this card for the first time an idea popped in my brain. You remember the old Taunt Druid, the deck where you use Hadronox to revive big waves of taunt minions? Well, some versions of that deck also used dragons (Primordial Drake, Sleepy Dragon) and Dragonhatcher to get more value from the taunt waves. So theoretically you could put this in there plus the new Breath of Dreams to make a very interesting Taunt Dragon deck. This is just an idea of course but I think it is worth to try.