Hearthpwn

This deck has been performing well for me since launch, and outclasses the old style of Zoo (with Keleseth and patches) by a large margin.

It plays out like a standard Zoo deck, but runs heavy demon synergy and some of the best new KNC cards.

Here are your mulligans:

 Keep any one drop, and if you have flame imp then keep demonfire as well. There are few decks that can come back from you having a 5/4 hitting them on turn two. Keep malchezaars imp as well, it can stop you loosing your hand if you need to drop and disco cards later.

NB: technically this is not a Zoo deck, as it is tribal. Thus the name change.