Hearthpwn

Not really, Wild Pyromancer will die before he clears you would need to buff his health first. A better option would be Sargeant Sally or the new Bat and they don't damage your own minions, but yeah to bad that the minions need to survive to get the buff.

While not necessarily a card you want to put in a deck, I'm super glad this card exists. Now I can make an Exploding Bloatbat + Stubborn Gastropod Zombeast to wipe my opponent's board >:D

Edit: Tested it out myself and this interaction does indeed work! Yay! :D

Been working just fine for me, I've gotten Poisonous + Deathrattle/Battlecry damage with Deathstalker Rexxar numerous times and it destroys any damaged minion. If you still don't believe me, there is a YouTube video that demonstrates the effect:

Actually they are changing how keywords like Lifesteal and Poisonous interact with Deathrattle effects when the expansion hits. So now Anomalus will heal with Frost Lich Jaina's Lifsteal effect, and Deathrattle damage + Poisonous will kill.

OKAY I have finally found its twin brother! 

At the Blizzcon championships today, I learned that if the opponent played Beneath the Grounds, you can end up discovering one of the Ambush! when playing Tracking, and it being discarded does not summon the Nerubian on the opponent's field. Interesting.

Most people seem to misunderstand, and therefore, misuse this card.. leading to gross underestimation of what it can do.  Tracking is not something you play just cause you have an extra 1 mana to burn.  E.g. People who play it on turn 1 are almost always making a mistake.  Tracking should be used as a way to dig for an answer so you can maintain tempo/control of the board, or finish your opponent.  I've used it countless times to dig for that Ironbeak Owl/Kill Command/Unleash the Hounds/Quick Shot/etc I needed to win the game before the opponent could recover.  When used that way, (properly), Tracking is quite powerful and usually worth running 1 of in a deck.