Seriously though, you might really enjoy Zeratul, even though you hate playing against him. His kit is very rewarding once you master it, but you do have to learn to be patient as he doesn’t really come on-line until later in the game. Once he does hit his power spikes, he is a delight to play.
In addition, it will definitely help you when do you end up facing him, as you will know what to look for, and how to punish him when he does make a mistake. Seriously, give him a try, you may like him!