Boozor

Rating (1=excellent, 2=good, 3=average, 4=poor, 5=terrible)

Plaguebringer (1): Plague Scientist was a pretty high quality pick, this card is probably better on average since it can be played for 4 mana whereas the Scientist usually requires more mana to …

Need to pray to RNGesus before you start your run. 

The base scores are mostly correct.

The deck building algorithm that is used to adjusted the scores can be wildly off.  

The app is a good second opinion, but it will be less and less …

Barista Lynchen (2): Solid card, 1 hit and it's good. Anything mores this really great value. Battlecries are the most valuable types of minions so we pick a lot of them naturally in Arena.  

The Boom Reaver(2): It's …

Scargil(3): 4 mana 4/4 is okay. The murloc synergy will likely have minimal impact on it's overall effectiveness.  

Arcane Fletcher (4): Other then Hunter I don't see this card being draftable. Even in Hunter it's rarely going to …

Archivist Elysiana (3): I can see this working out in some spots. Playing it will be tricky, but I can see some upside with this to make up for the initial tempo loss. 

Hench-Clan Hag (2): It's going to …

[card]Archmage Vargoth[/card] (3) - Playable as a 4 mana 2/6, but effect can be a drawback, or a potential blow out. On average probably does nothing.  

[card]Tak Nozwhisker[/card] (3) - Needs support to realize true value, but a 6/6 …

Catrina Muerte (1): Should be an awesome card. True minion win condition for Priest. Anything over 2 mana should break even, anything more can be absolutely insane.  

[card]Lucentbark[/card] (3): Stat wise is pretty mediocre, however with some heal support …

Fel Lord Betrug (2): Can tap to get immediate impact, although for 10 mana it's not going to be strong enough. The effect is strong if it survives one turn since you draw 2 cards per turn as Warlock potentially. …

Jepetto Joybuzz (4) - 8 mana 6/6 and draw 2 cards would be playable/pretty good, but I think the draw and transform into 1/1s makes this card worse on average. 

Dragon Speaker (4) - This card is probably average …

Keeper Stalladris (2) - Bit of a weaker stand alone 2 drop but it's playable and can give some insane value.  

Vereesa Windrunner (2) - Bit of a low roll [card]Malkorok[/card] but still great and has spell synergies as …

Omega Devastator (1): Ya it's good. First Assembly now, Devastator. Very powerful card.  

Improve Morale(2): I like it. It's a stronger [card]Blood to Ikor[/card] since the Lackeys are going to be better then a generic 2/2 often enough.  

Oblivitron (5): This card is probably un-draftable. Not only is it's effect a deathrattle meaning it's likely that you won't have the initiative to trigger it, it's grossly over costed/under statted and the effect is tribe only. There's just too …

Arch-Villain Rafaam (2): Excellent base line scores, but the battlecry can be awkward. It's a situational play in some spots, and of course the RNG can be immense depending on the available Legendaries. Building a deck around the card …