Hearthpwn

ALWAYS keep:

• Loot Hoarder, Injured Blademaster, Shadow Word: Pain, Holy Smite. Also Acolyte of Pain is a good keeper.
• Resurrect if you already have one of the minions above.
• if you expect aggro/zoo, also keep 1x Excavated Evil / 1x Holy Nova (NOT both).

NEVER keep high cost cards, plus:

• Power Word: Shield and Mind Blast. These are low cost cards, but are needed later.

1. The minimum objective is to stall early and midgame. You have removals, aoe, and sticky minions through resurrection mechanics (Injured Blademaster above all).
2. Try to spare Holy Smite for combo (2x with Velen equals 8 damage), but use them to clear if necessary.
3. Cycle with Loot Hoarder, Acolyte of Pain and Polluted Hoarders and Resurrect them for both board presence and more cycling.
   Pay attention not to mill yourself!
4. Try to enchain Resurrect, Onyx Bishop, Barnes with best possible chances to get what you need most.
   THIS POINT IS CRUCIAL (see below).
5. Drop Emperor Thaurissan ONLY if you have in hand Prophet Velen and/or Mind Blast too.
6. COMBO Prophet Velen + Mind Blast + Mind Blast equals 20 damage to face in one turn. 28 with +2x Holy Smite.
   Sometimes all you need is just a mind blast alone, sometimes you need the full combo.
   Most of the times the 20 damage combo is more than enough.
   NEVER drop Velen without lethal combo.

It is FUNDAMENTAL to enchain minion summoning and Resurrection at best, in order to maximise chances of obtaining what is best for you.

• Resurrect and Onyx Bishop work on your pool of dead minions. A resurrected minion that dies again, appears MULTIPLE TIMES in the Resurrection pool.
  In other words, it has a higher chance to be resurrected AGAIN later.
  Resurrection is kind of a chain, be careful on what you play, what dies and WHEN.
• Barnes will NOT summon a copy of something which is already in your hand.
• Resurrection works on dead copies summoned by Barnes: summoning a useless copy (Onyx Bishop) will more likely ruin the resurrection chain.

EXAMPLES:

• Injured Blademaster dies. You Resurrect it. It dies again, together with a Loot Hoarder: your resurrection pool now effectively contains TWO blademasters, even if it was the same that died twice.
  This means that in a further resurrection, blademaster has 66% to come back, against 33% of the hoarder. Even if you played just 2 minions, total amount of deaths is 3 and that's what counts.
• You use Barnes while you have both your Onyx Bishops in your deck, you have chances to evoke their copy. The copy dies and it becomes a target for Resurrection. It is a decent body, but a bad target for your strategy (see also case 1).
• You use Barnes while Onyx Bishops have already been used or are in your hand. The summoned copy will correspond to another minion in your deck, which in turn will be a better Resurrection target (sylvanas, blademaster, cycle cards).

Depending on your meta, switching 1x Holy Nova for an additional 1x Holy Fire might help countering single target, if you are facing a small number of zoo/flood decks. 
Shadow Madness is also a good option, but that might trample over your resurrection chain.

1. Arcane Giant: the deck contains enough spells to make them a good option. Possibly in place of Loot Hoarder if you find the latter is inefficient in Resurrect chains.
2. Yogg-Saron, Hope's End: with 18 spells, Yogg can be a desperate last stand button even after the nerf.
3. N'Zoth, the Corruptor: counting resurrections, this deck contains quite a good number of deathrattles.