5 Star card in standard. Why? RELICS. Discover a relic and you probably win the game. Additionally this lets you discover more Unleash Fels.

Seems meh. But on the other side this might be the DH version of Hollow Hound.

Hmm. Probably won't see play regardless, because BIG DH already has the insanely strong combo with Unleash Fel.

Pretty much a must-include for a bunch of DH decks. Like this already has 2 insane abilities. 1 being the summon a bunch of Taunt elementals cuz 2 spawn on the lifesteal side and the other 2 on the rush side. And 2 being the mana cheat, cuz mana cheat op. This will see a lot of play.

All hail our DH overlords.... Like seriously in terms of power this is a questline level reward, except without a questline. Draw this on 5 and you probably win the game.

This slots perfectly into Relic DH already, and a bunch of other DH decks as well cuz it casts a COPY. Which often means more damage FACE.

*Sigh* Typical DH, after all their class identity is "Being OP", "getting nerfed" and "Powercreep".

Very strong card. The blood ability alone makes this card worth running in blood DK, and Rainbow DK might also enjoy it. I also feel like Plague DK will probably enjoy using The Primus as well. Just a very good TITAN that is quite flexible.

5 star card. Even in non-Plague decks you might just include Helya in your decks because unless your opponent Steamcleaners your opponent will just be taking a lot of damage over the coars of a game. This seems really good, even standalone. I bet this will see play in a lot of unholy decks, and in Rainbow DK.

Also RIP Demon Hunter and Rogue, they won't be missed.

This seems pretty good to me. Most plague cards look quite decent, and this gets the manacheat whenever you SHUFFLE a plague in your opponents deck. So even if your opponent Steamcleaners their deck it will still keep the discounts. And i feel like it's often gonna be playable around turns 4-5, which is when you need this kinda card in order to help deal with the board. This really helps Plague DK (That's just what i'm gonna call it.) with surviving untill the plagues kill your opponent, or just setup some pressure.

Premium statted 2 drop with a good deathrattle is good enough because of the deathrattle synergy with cards like Death Growl and it's just a great minion to include regardless if your running a plague deck or not. I can see this getting played in Unholy DK or some kinda double unholy + 1 frost rune DK.

If the plague package works in Rainbow DK, then this will be quite a powerful card. This also gives Rainbow DK a board clear, which is nice against aggro.

Very good card for Rainbow DK. It's quite dependant on the plague package being good, but i feel like it will see play regardless.

So Research Project except your opponent will have 2 dead cards in hand for 1 turn. I'm not sure about this one. In frost DK it probably wont see play, because they have better draw options.

In Rainbow DK it might see play. Why? Because of the Helya Plague package. This makes it so your opponent draws more cards, and thus draw the plagues faster, which can help you win the game. Seems pretty decent there.

Hmm. Unholy and Frost wont run this. Blood probably won't run this either, because they already have a lot of good tools. However Rainbow DK will probably run this, because they need some more corpse spenders.

A nice spell tutor for DK, seems decent. DK Probably has better draw, but i still think it might be considered in Rainbow DK.

Seems interesting for double unholy decks, triple unholy probably wont run it since it cares more about setting up a board and win the game with Grave Strength. Seems meh to me, if this was a 1 unholy rune card though.. Then it would have been so much better.

My predictions

Nerfs:

Disco Maul: Probably nerfed/buffed into a 3 mana 3/2 weapon. Could also be interesting if they change it into a 3 mana 2/3 weapon, but they probably just make it a 3/2. This nerf was also heavely requested, like it's almost impossible to go anywhere on social media that's HS related without seeing people complain about this card. Personally i didn't mind this card that much, but i'm happy for others that they finally got the nerf they wanted.

The Purator: This was to be expected, as it's Pure paladins best card. (Like it even has a big MULLIGAN winrate, and high mulligan winrate on a 5 drop isn't that healthy.) They will probably nerf this with a +1 mana cost. Even at 6 mana it's still a strong card, and slows down the double Lightray.

Feast and Famine: Probably +1 mana cost, or they change it to +2 attack. Personally hope it's +1 mana cost, so it's more in-line/comparable with Rockbiter Weapon. Interesting that the weapon didn't get nerfed. They probably want Shaman to be able to play the weapon, and thus only nerfed the Pure paladin burst.

Pozzik, Audio Engineer: They can do a LOT with this card. Statline changes on pozzik himself, or the bots. +1 Mana cost or lower the mana cost of the bots. Personally i think the bots will go from 3/3 to 2/2 statline, so the deathrattle is a little weaker.

Lady S'theno: PRAISE YOGG. Finally, they finally nerfed this card instead of literally everything around her. They will probably increase her cost by 1. (Would prefer it so she can't go FACE, but that would probably "warrior" DH.)

Hope of Quel'Thalas: Honestly i'm surprised to see this getting nerfed. Probably will go from a 4/2 into a 3/2 weapon. Nerfing the effect would kill the card, and nerfing it's cost would probably kill it as well and they don't like killing cards unless they create super toxic play patterns. 

Buffs:

Fiddlefire Imp: Probably a stat buff. This card is trash in regular play, but very strong in arena. So i don't think they will lower the mana cost from 3 to 2 mana, otherwise it might be too strong. In terms of stat buff, i think it will probably go from 3/2 into a 3/3. Giving this a premium 3/4 statline would be too strong considering this creates 2 cards.

Remixed Dispense-o-bot: Probably a stat buff into a 4/5 minion. They might consider buffing & nerfing this into a 3 mana 3/4 as it feels slow and clunky at 4 mana, but i feel like it will be too strong at 3 mana. (Just like Fiddlefire Imp, a 3 drop that generates 2 cards on a premium statline is too good.) Also another reason why i don't think this will be buffed to 3 mana: Seafloor Gateway is in standard.

Rhythmdancer Risa: PLEASE do NOT buff it so it costs 0 mana. PLEASE NO. We don't need a legendary Wildpaw Gnoll with build in "Shadowsteps"! The problem with this card is that 3 attack isn't that good of a breakpoint. My prediction is that it will be buffed from 3 to 4 attack, so it has a better breakpoint. 

Overall i'm looking forward to seeing how they will actually nerf & buff these cards. I'm excited to see some problematic cards like Lady S'theno and Disco Maul finally get toned down a bit. Also looking forward to the mage minion buffs, hopefully they can help mage be a bit better.

This seems pretty good for aggresive or midrange decks. It does a bunch of damage in the best case scenario, worst case scenario you make your opponent play a couple of unoptimal turns. (Like forcing out cards or removal they prefer to keep in hand or greed out a bit longer, but are forced to play to prevent taking damage.)

Sure this could backfire, but in aggresive/midrange decks by the time it backfires you would have probably lost the game anyways. So it's not that big of a downside.

Oh and because you add a card to their hand you could mill a card as well, which is nice.

Seems really good in minion heavy decks. I remember people playing Book of Specters in minion heavy mage decks (Which ALSO ran a few spells. If you lost a few it didn't matter that much) and i feel like some minion heavy decks will also run this. I can also see this getting played in some kinda fatigue/mill deck. Maybe some aggro decks with very specific synergy spells will run this as well. (Like Totem Shaman, losing out of a Totemic Evidence is not a big deal and your opponent can't really use it... Unless it's a mirror match.)

4 mana draw 3? Sounds great!.. Untill you realise you MUST discard a weapon. And the weapons in standard are quite good, if not build arounds in certain classes/archetypes. Like Forged in Flame was good because you can get value from your weapon. Grimtotem Buzzkill lets you have no value from it. And plenty of classes have way better ways to draw cards... This seems really bad surprisingly.

Hmm. A little [Hearthstone Card (Loathab) Not Found] with tradeable. I'm uncertain about it. 

This seems horrible in mirror matches, and it's only 2 more. Cult Neophyte is way better because it's cheaper and 1 more already disrupt enough. I can only see this getting played IF the meta is SUPER spell dependant... Or if you HATE Druids and Control Priests, which is actually quite understandable.

3 mana 3/3 rush hasn't seen play in quite a bit, and i dont think these RANDOM keywords change anything.

Lifesteal is nice, probably the best one.

Poison is pretty meta dependant.

Divine shield is probably the 2nd best one, but the problem with it is that most 3 drops have 4 health so it only removes like a 1 drop or at best a 2 cost minion. (But even then some 2 drops have a 1/4 statline)

Windfury is kinda meh. Sure you can buff it up, but it's just gonna get removed. Also nice 3/3 windfury, shame it's useless against that 3/4 on board. Also Shaman has Brass Elemental which cost 1 more but has 2/4 of Remixed Musicians keywords and it sees no play.