Chameleos SPYtful Summoner/Keleseth Dragon Priest

As the name suggests, Chameleos plays a major part within this deck's play-style.  Knowing exactly what cards the opponent has, then tearing them apart with it is both satisfying, and much better than expected.  Keleseth with bring most decks to their knees, and Duskbreaker has a 95% chance to tear the soul out of ANY agro-pali deck.  As we (probably) all know, Spiteful is actually just straight up broken in all respects, and is effectively the win condition of this deck.  In addition, a turn one Northshire can really improve your win percentage, as it's high health combined with your hero power not only adds a monstrosity to control the board, but also draws you your necessary cards.

Northshire Cleric can completely SHUT DOWN must agro decks.  However, with new OP cards constantly being added to agro-pali, more tools are necessary to ensure survival.  Duskbreaker is an early clear, and REALLY REALLY GOOD.  Nightmare amalgam has great stats, and your hero power can allow preferable trades.  Tar creeper is a good way to stop attacks to face, and a well-rounded minion in general.  Powerful cards, like Cobalt Scalebane can be one-shotted by Scaleworm, a very powerful tactic.

Especially against control, Chameleos is an excellent card.  It allows for perception of the deck the enemy is playing, cards they play, how close they are to combos, and, most importantly, ways to outpreform the opponent.  If an enemy completes a quest, it is quite satisfying to use it against them, using none of the effort, and reaping all the sows.  Twilight acolyte can shut down big minnions, allowing preferable trades, and creates a very big minion on board.  Prince Keleseth turns your deck into an agro deck, and can rush down and outpreform most others.  Scaleworm can take down big minions, Cobalt can take a Naturalize and such, still keeping an immediate effect.  And, of course, Spiteful Summoner allows for turn 5 Tyrantus XD gg ez fuck you.