This is a really situational deck – how are you supposed to reliably activate the egg?

This is a very poor deck for the current aggro meta. Right now its far too dangerous to use your health to draw cards and make it easier for your opponent to burst you down. Flame Imp, Backfire, hero power and especially Stealer of Souls etc. Just not enough healing options at the moment, if there were a few more Lifesteal options or if Mosher was permanent, then it could be competitive, but unfortunately you just die before you can do anything at the moment.