Hearthpwn

Basically, it's a Ironbark Protector that has it's cost split up over 2 turns.   You loose 1 attack, but It can be played on turn 5 vs turn 8.

The only other taunt with 8 Health is Deathlord.  Only other taunt card with a higher heath is Ancient of War in taunt mode.  Good card to give Ancestral Spirit

Combo Options:
Turn 5 + Turn 6 Windfury (spell).  Leaves 1 mana remaining.
Turn 6 + Turn 7 Windspeaker

14 damage is nothing to sneeze at.  

I love the smell of AOE in the morning.

I've run this into enemies for the +3 on a Lightspawn.    

example:  I had Pint-Sized Summoner coined on T1.    The Mage for some reason used Frostbolt on me.    With the summoner out I was able to get this on turn 2 and a Lightspawn on turn 3.  Mage played a Sen'jin Shieldmasta.  I gladly traded the summoner and the cultist for it (in that order).  With nothing blocking hit the light spawn was now a 8/8 and was buffed with a single Divine Spirit taking the Mage down enough they conceded.

Make sure you plan where the buff goes if possible.   

Many good priest and priest-like cards can use the +3 health.     A few the come to mind are Lightwarden and (2h), [card]Northshire Cleric[/card] (3h).   Taunts can also generally use more health. 
 

With Shattered Sun Cleric and the staple of Priest health boosting regulars I got one up to 2/23.   I basically was using it like a 2 damage weapon card that I spend 2 mana on every turn when I healed it and got a card.

Good times.

Was losing really bad on my personally made Shaman deck,   I had 2 quests that required Shaman wins and the losses took me from 17 to 20 fast.

I used this with a few changes and won 2, lost 1.    
The loss was to a combo loving flood the board Rouge.  I got doubled scubbed with a Flesheating Ghoul.
Man, I missed the sweet small of AOE in the form of Lightning Storm.

I replaced the 2x Bloodfen Raptor with 2x Knife Juggler.
I didn't have a Defender of Argus so I used a second Sen'jin Shieldmasta.

Thanks.

Haven't seen it much and not impressed by it.    I was a Priest and I was playing against a Mage.   Turn 10 they played Deathwing.    They dropped 6 cards for this.   Yes it took out my heavily damaged 2/20 Northshire Cleric which was behind a Shieldbearer and a Temple Enforcer.

I has 2 cards one was Shadow Word: Death.    They were losing 8 to 20-something.    I'll admit is was a gamble for them, but with this card you need to watch for removal.   Once you drop this you are top decking.

i just put kelthuzad in a zoo deck... hunter used explosive trap and i killed my whole board on purpose, then played kelthuzad

a way to summon demons without them kicking you square in the nuts? yes please

Playing a deck with 1 of these and 1 illidan, killing it off on turn 4/5 and getting a free illidan in play. Yeah, I can see this being a fun card.

only works on the next turn

Yeah, so first time I actually got to play Gelbin and this came out. Got it to heal 4 times! Great! Every single time it healed the opponent! Hey, fantastic! Never playing Gelbin again!