This is a Rez Priest list which utilizes some interesting cards such as Moonfang and Al'ar. This deck is super fun to play, having 4 Moonfangs on board is very tough for people to deal with. Surprisingly I went 9-5 with the deck in legend ranks, 5000-7000 or so. Below is a full guide to the deck explaining how to play it, match-ups, and mulligan options. I am also a streamer and legend level player, check out my stream if you enjoy watching hearthstone players :) (https://www.twitch.tv/supersenter). Also, below is a video of gameplay on my Youtube channel.
This deck is fun and can definitely win games, but I don't expect it to dominate ladder or anything. With that said, I have seen success with it in legend rank, so maybe it's solid.
The early game goal is to survive, then in the late game the deck starts to snow ball with rezs, and grave rune. The deck has so many ways to win, every minion can basically control the game (even Al'ar). In the late game you are looking for value plays, and to hit grave rune on impactful minions like Moonfang, Al'ar, Skeletal, Catrina, or Blood.
In almost every match-up you are looking for early control, a 5 drop minion, and insight/palm reading
Demon Hunter/Hunter: If you can survive the early game, you should be good against demon hunter. They have no way to deal with repeated minions, and then just slap an Apotheosis on something and win. If they are aggro, then your goal is to target the Khartut Defender with Grave Rune. They will concede.
Warrior/Paladin/Warlock/Druid: Repeated Moonfang/Al'ar is tough for them to deal with due to the lack of silence. These decks will usually be control decks, so you should have time to play minions and grow boards. Play strategically, and use Grave rune in key situations, and you should win. Against Druid you should be sticking Moonfang, and looking for mass removals for their big minions. Against warrior you should be trying to steal Rattlegoreif possible.
Priest/Rogue: Rogue is a really tough match-up if they have sap. If they don't have sap, then you win. Priest has great tools to deal with minions, so play around those removals. When they're low on cards, if ever, then you should push for the win ASAP.
Mage/Shaman: These are tough match-ups because Devolving Missiles can basically ruin your whole game plan. There is a lot of OTK mage right now, and you will likely lose against that 100% of the time honestly. If it's highlander mage, then you are pretty favored.
Most cards in this deck are very obvious, they’re part of the original rez package. I'll explain my fun additions below:
Insight: Great tool to draw strong discounted minions. This is very important because it allows you to combo your minions with Grave Rune, etc.. Always try to corrupt this before playing, ideally with Palm Reading or Breath of the Infinite. Combo a 1 cost Insight with Archmage Vargoth has proven to be quite strong early.
Palm Reading: Solid all around card that discounts important spells, corrupts Insight, and allows you to discover a situational spell. Target Khartut against aggro and you win. Hit Al'ar and win.
Grave Rune: Just an insane card in this deck. Having Archmage cast this twice in a turn is an easy win. If they have no silence, then you win. Target Khartut against aggro and you win. Hit Al'ar and win. Can very easily swing games in your favor.
Moonfang: This card has proven to be very strong. So few classes have multiple hard removal options, so if you can summon multiple Moonfangs, then you generally always have one alive. Try to hit Moonfang with Apotheosis, and you will constantly be healing big every turn.
Al'ar: Half meme, half a card that has actually won me games on it's own. What I can say is that if you can consistently rez Al'ar, and get several on board then you will probably win. It's a great card against Warlock and Paladin.