Hearthpwn

I wish they'd created a different card, and just reduced the cost of Drain Life.

That weapon is nearly an 8-mana Flamestrike.  Seems reasonable in a warrior which isn't running the quest.

Auctionmaster Beardo Paladin tier 1.

I feel like this card could have been auto-include in Goblins Vs. Gnomes era, but that Hearthstone has mostly just moved on.  The other 2-drop minions you'd put into a token deck today just seem a bit better.  IMHO, this compares favorably to Lance Carrier in an aggressive deck, and Lance Carrier saw a bit of play back in the day.  If a new player pulls this from a pack, sticks it in a fast deck, it's not that terrible.

Iron Hide + Power Word: Death + Shadow Form + Auctioneer Beardo.

Sweet card in a Raza deck.  All those times when you'd use cheap spells for Lyra or Priest of the Feast? You also can get a bunch of free damage.  I don't know if it's any good... Cast and hit exactly one minion: it's 5 mana for 5 armor, and a hero power alteration you probably didn't need.  If you can hit two minions with it, then it starts to get pretty good.  Seems like a card which could see play almost entirely as removal in the right metagame.

Almost but not just with those two.  Raza reduces the cost to 0, but you'd need a source of cards to play to refresh your hero power, much like with Auctioneer Beardo.  To go nearly-infinite, you'd need Nexus-Champion Saraad or Lyra the Sunshard.  However, in a regular Raza deck, it still could be pretty sweet.  Priests often have lots of cheap spells.  Imagine if on the turn when a priest played their Funnel Cakes/Priest of the Feast and gained 9 life, they also did 10 damage.

Tirion into N'Zoth is obviously the dream, but it's also great with Wickerflame Burnbristle.  Getting those few extra triggers of Lifesteal can put you out of harm's way.  Solid enough with Infested Tauren, too.  Might be too slow in practice, but it's certainly worth trying in both Quest and N'Zoth Paladin.

I really don't like this.  Jade druid was going to rotate out at the end of the season anyhow.  This seems like a toxic card which can ruin archetypes, but in an unfun, uninteractive way.  Just play it and ruin stuff.  Lazy design, which may come back to bite them.  If they want to kill Jade Druid, just yank Jade Idol from standard early, or nerf it and various helper cards (Gadgetzan Auctioneer).  Don't print a hate card which has the potential to be toxic for hearthstone for a year and a half.

The hero power effect is basically Dinomancy, and Dinomancy is bad.  Your opponent clears the board after you play this, and you're probably toast.

Dinomancy + Iron Hide + Evolve + Evolve.  I don't really think it's all that great.  I think it's fine, but you could just play Bloodlust for 5 mana and win the videogame.

I believe you misunderstand.  To start with the example: if you had a Shadowstep Aya in your hand already, play it first, it costs 4 mana.  You'll then have 6 mana left over to play the full cost Aya from Shadow Reflection.  I can't quite say Easy as Pie, since it's a 3 card combo where you have to let one of the pieces sit in your hand, but the logic of the process shouldn't be hard to follow.

Order killed almost surely doesn't matter.  It doesn't for N'Zoth.

At first glance I fell in love with this card, but the more I think about it the more I think it won't work out.

To be sure, this card would be utterly bonkers in any class other than Hunter.

In Hunter... I think it has potential but I don't know how to use it.  It doesn't look like it has enough SMOrc-oomph as a 3-mana 2/2 for a face hunter.  There isn't a combo piece to fetch, like with Inner Fire priest.  There isn't an obvious strong 4-drop to curve out with.  The value game, while high, is probably too slow (in constructed... in Arena, this looks SO GOOD), and with generally weak control tools.  While Stonehill Defender is a really popular card with a similar effect, a 1/4 taunt is a way more relevant body than a 2/2.  I dunno.  Maybe I'm underestimating the power of Stitched Tracker into Dispatch Kodo.

I'm unconvinced that aggro wants a 3-mana 2/2, but it might work out in play.

With the Shadow Visions comparison, mana becomes an issue.  Shadow Visions is used in two ways: to generate long-term value (copy a Free From Amber or an Un'Goro Pack), or to fish for a board-specific answer.  Get that SW:P/SW:D when you need it, or a board clear.  However, minions are rarely that much of a direct answer to board conditions, and when they are they tend to be more expensive than spells.  You can't Stitched Tracker into Primordial Drake in a single turn, for example.  It's part of the reason why Lyra and Auctioneer are good, but Stampede is bad: spells are cheap, and minions/beasts are not.

I suppose there's a 3rd use for Shadow Visions: to grab combo pieces.  Getting the missing Inner Fire or Divine Spirit can be game-winning.  This could help with that, if there was a combo-hunter deck, but there isn't right now.

It's a strong design (discover is almost always great), and would be utterly bonkers broken in literally any other class, but an awkward fit into hunter.  A 3-mana 2/2 isn't a great face card, so into a longer-game value archetype, which Hunter has historically struggled to develop.

I have trouble naming the card I want to get with it.  Sure, grab a Highmane, huge value, but very slow.  There also isn't an obvious 4-drop you'll want, if you were trying to curve out.  In another class, it'd be easy to say Twilight Drake, or Water Elemental, or Priest of the Feast, or whatever.  In Hunter?  Harder to say.  You can't Houndmaster it.  Dispatch Kodo is OK, and might be a strong tool in a control Hunter deck. Infested Wolf is blah.

Quest Hunter might be good, though.  Early, it draws you a 1-drop to help you complete your quest, ideally Firefly.  After completing the quest, it'll draw one of the Brood, so you can chain that off.  The deck might still be too slow.