Mulligans
Hard Mulligan for Prince Keleseth!
Zoolock lately didn´t have any 2-drops that were really that good.
Maybe Keleseth can change that weaknes into a strenght.
This idea is not mine, I just tried translating it into an actual list.
Source: http://www.hearthpwn.com/news/3251-stancifkas-top-10-cards-to-watch-out-for-in