If you draw two additional cards each turn it is a Fiery War Axe. If you draw three additional cards each turn then it is slightly better than Truesilver Champion. And if you draw four additional cards each turn you are going to go into fatigue way too fast and die.

It's a tutor that also cheats mana and has a body attached. What's to dislike?

By the time you have finished all the steps you will have drawn more than 2/3s of your deck, making it suicide to complete. And the final reward doesn't even win you the game, it just asks you to draw even more.

But it still may be played just to get one or two discounts from the middle rewards.

It's a tutor that has an immediate impact, seems pretty dope even if it doesn't fit into a specific deck currently.

It's just stats. You get vanilla stats for 4 mana then if you put a little extra work in and wait you can get a few extra stats. I just don't see why any deck would want to put in the time and effort to utilize this card.

Seems rather bland. If you can consistently buff it then it is a very solid 4-drop, but nothing more.

This is very powerful. It basically gives your minion rush and mega-windfury for 0 mana with the option of being tradeable. There are just so many possibilities with this card.

Obviously this isn't a big game ending card like the other questlines, but it may still be playable. Over time it equates to 18 armor, 8 damage, and an 8/8 taunt with the condition that you play some bad hero buff cards like Gnash and Bite. Currently I don't think we have the right support cards to play this, but if we could actually get some good hero buff cards this expansion then I could see this working.

You need 8 overload cards which is almost a third of your deck. With the aid of some card generation it could be possible, but in general you'd probably be struggling to draw enough spells to utilize the payoff. 

This definitely won't be a tier 1 deck, but this is some nice support for overload shaman.

Guardian Animals aside, I really don't see how this could be playable. The deathrattle is too slow, and it has no other abilities to justify playing a 5 mana 4/5.

Very strong burn. And I don't imagine rogue will have a hard time drawing the extra copies.

This looks bad on it's own, but in conjunction with all of the other deathrattle support cards demon hunter has, this could definitely be played. It is another strong bundle of stats to be pulled by Razorfen Beastmaster, and you can also keep it in your deck to be pulled by Death Speaker Blackthorn. 

This is very good. It basically turns all of your tradeable cards into Tracking, which makes for incredible cycling when you can play 3-4 of them in a turn.

I am not terribly confident that this will see play. I imagine in a lot of cases you will only copy one or two minions and would rather run something more consistent instead. It's not a bad card, I just get the feeling that it won't be making the cut anywhere.

This isn't enough to by itself to justify playing a handlock deck. It's more of a nice addition to an already existing deck.

If a handlock deck becomes playable, this will probably be a part of it. But this won't be enough by itself to make handlock a thing.

The lack of keywords is troubling. If the demon had taunt this would instantly be a 5-star card. If the meta isn't rampant with aggro decks this could see play, but otherwise I am doubtful.

Even if there wasn't the chance of increasing the cost of your cards, this would still be mediocre at best. Reducing the cost of a single random card in your hand by 1 isn't enough to do anything with.

4 mana 4/2 is already good enough stats for a weapon to be played. And the ability can be very powerful. The only downside is that I am not sure if deathrattle rogue is a real deck.

It isn't a bad card, just not terribly useful. I am pretty sure there aren't any paladin decks being held back by the lack of a decent mid-game removal card.

Quote From Pezman

I can see this having a lot of cool uses. It's nice and cheap, so flexible. It only duplicates one battlecry, so not OP. Now if you could save the coin or get a 1 mana discount, play this with Shudderwock and let the fireworks begin.

You could just use tour guide and corrupt the waters to double your shudderwock, which people already do.

I like this card, it has some interesting uses. I think in general you want to copy the battlecry at least two additional times to be satisfied with the value. You could also use lackeys to trigger this for minimal mana.