A great target for Felosophy in both classes.  Will definitely see play in Quest Warlock and might see play in a soul fragment zoo.  I think some form of soul fragment DH will 100% see play just because lapidary is a massive payoff and the fragment generators are good cards in their own right, like this one.

I really like how they used the dual-class thing as an opportunity to introduce a new mechanic for multiple classes without making it neutral or spending twice as many cards on it. If they did this without dual classes, then this would take half of warlock and demon hunter's cards instead of 1/4th.

About this specific card, I gave it 5 stars. 1 mana 1/3 is a good enough stat-line to see play. And shuffling Soul Fragments is a huge upside.

This being a demon ruins my day because it messes up big demon decks. I guess we have enough other Soul cards in Warlock so it might not be necessary anyways

Nice cheap card for the early turns but mostly for midrange decks. I don't see this in aggro DH for example.

Warlock: Great 1 drop. Will certainly see play in zoolock, BUT that's only if zoolock even want's the Soul Fragment package. Will see play in control warlock as well, so they can control the early game a bit better. (And shuffle more Soul Fragments in their deck.)

DH: This contests with Blazing Battlemage and Battlefiend. But i feel like DH will drop Blazing Battlemage so they can run this card, because of it's synergy with the i.m.o. BROKEN card Soulshard Lapidary. This will only see play in tempo DH, because people will rather abuse Soulshard Lapidary to legend, than play some Control version of DH.

Both classes: This also has synergy with Felosophy, allowing DH and warlock to fill their decks with even more Soul Fragments.

A pretty nicely-statted demon for any decks that want early game board control.

Unlike beasts with Dire Mole, demons don't have a lot of tribe matters effects in the very early game, so this is less strong.

Enabling fragment effects is useful, but as the only fragment generator alongside marrowslicer that is aggressive, I can't imagine this making waves for aggro.

I don't think mecha'thun wants unpredictable heals like this, so this is unlikely to beat out mistress of mixtures.

Quote From Brandon

Warlock: Great 1 drop. Will certainly see play in zoolock, BUT that's only if zoolock even want's the Soul Fragment package.

Not necessarily. 1/3 statline is good enough to see play in Zoo without any upsides, and this strictly has an upside. The upside is of course being a demon, and getting demon synergies. They don't care about restoring 4 health some day, but they certainly care about a premium statline with a premium tribe tag.

1 mana 1/3s with upside always see play, and so will this one.

1 mana 1/3 minions have historically seen play, Warlocks Voidwalker and Priests Northshire Cleric being the gold standard for those minions. 

While this minion will not block 3 damage to your hero or help you cycle your deck, this minion will assist with shuffling cantrips that restore health once drawn. Demon hunters hero power and their assortment of weapons gives them the option to use their face to clear troublesome minions (especially with Blades of Azzinoth), whereas Warlock's hero power and their own powerful cards damage them for beneficial effects, both will appreciate the free life gain from the soul shards.

Warlock has an additional benefit from the life gain, however. In this set we were shown the Flesh Giant, a massive 8 mana 8/8 creature who is discounted by (1) for every time you change your heroes health on your turn. Since Warlock's healing is usually negligible these will help him cheat out the giant easier without putting himself into lethal range. 

The fragments are really good in warlock, more healling? that's great, they got both synergy and anti synergy with the warlock quest: each fragment is double card draw BUT if you draw a fragment with the reward hero power it ruins the discount.

Anyway of course this card is AUTO INCLUDE in any fragment warlock deck and it's probably just auto include in every slower warlock (and maybe DH as well) deck that isn't restricted by big demons or something.

Both classes highly appreciate the healing provided by the fragments

Easy pick, could be used even if you don’t run the cards that make use of soul fragments. Then it’s a above-par1-drop with some random healing later on, wich is not bad at all. 

Great card.  I don't quite believe in the whole package though.  The legendary is underwhelming.  I guess there are a few cards left to reveal though.  Soul Fragments is a good theme that will hopefully get some more support through dual class cards in the next expansion.  They added Lackeys in multiple expansions and that worked out pretty well so there is hope.  My fear though is that they abandon this idea the way they did with C'thun, and the package becomes all but unplayable after 1 month in Standard.

I expect Spirit Jailer to be a meta-defining card in Warlock. Even without the synergies, this does a lot

Really good for healing up some and gaining early control of the board. Especially since the deck is looking kind of like the old Dragon Priest, being very much a tempo based deck early on

Solid card, like most 1-mana 1/3 bodies are. Will definitely see play. 

That 3D-looking art looks weird, though. Pretty creepy, even...

This is mulligan material right here!! On a better day this is played on T1 you can argue that control DH and Warlock will have answer on your board for couple turns ahead. Just scary.