Hearthpwn

Initially it has Princess Talanji but it hadn't been useful in many games and the card have anti synergy with the quest minion. I replaced it with Shadowreaper Anduin because it is more useful (help clearing minions and pressing the oponent)

The deck have:

-a lot of card generation/ card draw, it's really difficult to run out of steam. You can generate unexpected cards with deathrattle minions that create cards or with Stonehill Defender (there are a lot of useful taunts, some of them with deathrattle)

- It's easy to complete the quest quickly due to the deathrattle minions with card draw

- The possibility to copy 3 (or 4 with Shadow Visions into Seance if needed) times Amara, Warden of Hope. Seance also can be used in enemy minions when you need it.

- Good area removal, specialy with Mass Hysteria as a very adaptable removal. This card is really powerful.

- Archbishop Benedictus to win in fatigue and/or get some useful cards like a buffed Kingsbane

- skulking geist to counter some combo decks

Mulligan 

Keep cheap minions with deathrattle (Bloodmage Thalnos, Crystalline Oracle, Dead Ringer, Loot Hoarder). If you have 1/2, you can also keep Weaponized Piñata.

Against druid mantain only draw minions and Skulking Geist (this card is key to destroy naturalize which a lot of druids run)

Matchups

The deck works well against kingsbane rogue (you can copy their weapon with archbishop), midrange deathrattle rogue, odd mage, control warrior, warlocks in general (i haven't faced the thanos warlock, but this probably will be more difficult) , combo decks that can't kill you without 1 mana cost spells. Mass Hysteria and Psychic Scream are very good against midrange decks.

Against agro it depends if they have the perfect start or you have a bad one, you probably lose. But once you play amara it's finished. Odd paladin is a hard matchup (but it's still possible to win with board clears) Vs non agro hunters the most dangerous card is always Deathstalker Rexxar, because it could generate a lot of dangerous minions.

The worst matchups are against combo paladins (it's nearly impossible except you can mill some key card or you are extremely lucky) and shudderwock shaman.

Changes

I have replaced 1Psychic Scream to add mind control (win games against taunt druid and it is useful against deathstalker rexxar or control decks).

Bone Drake forCairne Bloodhoof because sometimes I generate too many cards and it gives me more board presence.