Hearthpwn

The 2-drop Priest deserves! Well one take on it at least. The idea is to keep it flexible, so you can play it to debuff your opponent's 2-drop, protecting your Northshire from getting eaten by a 3/2 for example. You can play this to set a target into Shadow Word: Pain range. And finally you can play this proactively on an empty board and get a 3/3 for 2.

Flexible removal, as well as cycle that can also work with healing synergy. You can get the cycle more reliably than with Slam, since you can target yourself or your opponent, but since it also heals you don't deal real damage, unless you have reversed healing.

Super gimmicky, but this is a unique effect with a variety of uses. It can ensure an Enrage minion maintains its buff through board heals, it can set up bad trades for your opponent, and finally it synergizes with other cards in this set. Keep this one in mind.

A weird card effect, but I like it. I feel "trick heals" and playing with dealing or healing damage is a very Priest thing to do, and could help give them identity over classes that currently are considered the superior healers (Druid, Paladin, etc.). This can be spot removal on a weakened target, or it could be used to spam healing bonuses, and finally reversed healing can let it just deal 4 damage.

A new mechanic, though not a new Keyword as it's only on two cards, so clarification text is necessary. Basically any healing means any instance of restored health, whether from spells, your Hero Power, other minions, etc. Reversed healing means the minion suffers damage equal to its full health, instantly killing it. So watch out for that.

And in case it comes up, if a target with Atonement is then targeted with Schism, Schism's effect takes precedent; it will "fully" heal, but be left at 1 short of its max health. This occurs even if Atonement is applied after Schism, because since Schism only lasts a turn it takes precedent.

The "spell on a stat stick" of the set. The key here is the enchantment can be given to an enemy minion, turning reversed healing into removal.

A minion-based Holy Nova, sorta. Originally I grossly overcosted this minion as I felt it was too powerful (it used to be 7 Mana), but as it turns out 1 damage is not equal to 2 damage AoE most of the time. Meaning 2 damage AoE like Holy Nova clears a lot more things than 1 damage, so it's not quite as potent as Baron Geddon. I'm not happy with the amount of text on the card, most official cards aren't quite as wordy, but there are no examples of this exact effect to work off of yet.

This card can potentially be a board clear, the most obvious being if you have an Auchenai Soulpriest in play. This is where cards like Schism can become sneaky forms of removal in a pinch. Otherwise getting a reliable board clear out of this is an exercise for the reader.

Spirits be with ya mon! His Deathrattle is Sylvanas Windrunner but different. Playing around Sylvanas usually involves flooding the board or trading a weak one into her before playing your big threats. Here the target is much more focused, but in a way easier for the opponent to play around by trading in the intended target to manipulate its health. This suits Priest well however, as you can target a specific minion by adjusting their (or other minions') health to within the range needed to get this Deathrattle to work.