Update

Tweaked towards more of a midrange deck as per suggestions in the comments.

Need help with some fine tuning, but this deck has been a lot of fun.

Between Zameck Guildmage and Thrull Parasite the undying creatures never die and you might get card draw out of it.

It's also fun to Rapid Hybridization your own undying guy to get a +1/+1 counter and a 3/3 for U.