The issue with Circus Medic is that, instead of increasing the impact of its effect, the corrupt effect changes "the mode" of the card. I actually think you'd like the damage earlier and the healing later in a slower deck. However, there is some fringe potential in Quest Shaman with a Y'Shaarj, the Defiler OTK, but I don't see this anywhere else.

Even though I don't think Elemental Mage synergies will work out, I can't deny the Fire Fly level of universal flexibility of this. Confection Cyclone could see play in every Mage deck that cares about tempo, like Small Spell Mage, as it helps fill your curve extremely well.

Demonwrath with a 4/3 body for 1 more mana is a pretty efficient card. My hang up with Fire Breather is that Crazed Netherwing still exists in standard for 1 mana more than Breather and does 1 more AoE damage. I think that once Netherwing rotates out, Fire Breather will have a chance to shine.

For N'Zoth Paladin, this is a free 2/3 body to come back with N'Zoth, God of the Deep and draws your Circus Amalgam or other dragon. The issue is, I don't think N'Zoth can be a sole win condition, and I'm not sure if it fits with the Libram package.

Besides the fringe combo potential, I think Silas Darkmoon is too slow for the cost. Also, I don't think Silas is the best answer to the situation where your opponent has a high priority minion on the outside of their board, as you spend most of your turn taking the minion and giving them a minion back. IF your opponent has multiple substantial minions on board, Silas just feels like such an inefficient play.

My issue with this is that it feels terrible to attack with without a minion on board, and even then I don't think the buff is substantial enough. Sure, it curves nicely with Cagematch Custodian, but will the Custodian usually live to be buffed? My answer is no: the early game is usually about trading early resources to prevent early damage. There are just better weapons at Shaman's disposal, which isn't a great sign for the class.

Priest currently lacks card draw and this looks like an efficient addition of some to Priest. Insight is easy to corrupt and gives you the mana spent on it back in the discount. I don't see why Control/Highlander Priests wouldn't want to run this.

Pretty much an upgrade on Menacing Nimbus as you'd much rather draw a card than add a random one to your hand. Currently, I'd say most Shaman fringe archetypes has a weapon they want to draw, whether it's [Hearthstone Card (Runic Spear) Not Found], Splitting Axe, or maybe even Doomhammer. I don't think this sees play with Whack-A-Gnoll Hammer as that weapon is too inconsistent even though it curves into Custodian. Overall, I think the presence of Custodian in the meta is limited by the presence of Shaman in the meta.

A very powerful silence effect to be sure, but I think Priest would rather just remove the minion rather than silencing it. I imagine The Nameless One being dependent on the meta and how many valuable silence minions exist in competitive play. 

I think that Nazmani Bloodweaver isn't as good as Sethekk Veilweaver. Priests care more about value than discounts, and Sethekk is more self-contained in its chain than Nazmani.

When I compare this to Mountain Giant, this seems so lackluster as, while you do get to trade with up to 6/6 worth of stats immediately, the discount is only limited to minions and you're not left with much stats after trading. Overall, Derailed Coaster demands you to hold cards, but doesn't offer the swing potential that Mountain Giant does.

The AoE benefit comes online on turns 5-6 at the earliest, putting it in competition with Hagatha's Scheme, Earthquake, and Tidal Wave. The only application I see for this is the Y'Shaarj, the Defiler combo with Circus Medic in Quest Shaman, but that seems slow and fringe at best.

The issue with this is that it's not aggressive enough for Zoolock or defensive enough for slower Warlock decks. Although a great pull from Archwitch Willow, Ring Matron just doesn't offer enough inherent synergy by itself and can't be consistently discounted with Free Admission.

While this looks good in Resurrect Priest, I think that archetype already has enough good resurrect targets, hence why we've seen the archetype in the past. The one thing the archetype really needs is more ways to resurrect cards, because Resurrect Priest can only create a couple of substantial boards before they are out of major threats. Overall, I don't think that Resurrect Priest suddenly becomes good just because of Blood of G'huun.

Paired with Swindle, this looks much better than my initial impression of it. We all know from Fal'dorei Strider how powerful free minions can be when they are attached to a reasonably statted early game minion, and considering how many Rogue decks right now aren't playing for pure aggression, I think Rogue will have the time to draw the teddy bears to make Ticket Master have more of an impact.

This seems to come down pretty late in a SHR game plan that's about aggression. Also, I'm not sure there are enough SHR generators to take advantage of the effect as well as follow up cards to make use of the divine shields.

Having seen all of the cards for the expansion, there isn't much to take advantage of the divine shields as, at the end of the day, the SHRs only become 2/1s with divine shield. There isn't a Quartermaster or Level Up! to take substantial advantage of a wide SHR board.

The corrupt benefit impact falls off a cliff if you can't play the corrupted version as early as possible. Sure, having a wide SHR board is handy for board buff follow ups, but I don't think there is enough, with the full set revealed, to support a SHR deck.

I think Kiri, Chosen of Elune is too slow and perhaps overkill if you're already running both Eclipse spells. Druid can't really afford to play a 4 mana 2/2 in the early game when the early game is when they are the weakest.

This might make Malygos Druid more consistent along with Lunar Eclipse for early game removal. I don't think Guardian Druid will want to run Solar Eclipse because they already have efficient late game plays.