I remember a time (roughly 18 months ago ) when I would have gotten really excited to see this card be printed, and then promptly dissapointed when it turned out to be way worse than Drake Haven.
Currently under translation, but here's another drake haven if you want one. I personally think Faith of the Devoted is cooler, but I also haven't played with any of these three.
I think the fact that this can start making tokens the turn it comes down without an additional mana investment is great, but the fact that it only triggers once per turn and the tokens don't have flying kills it. Much of the value from Drake Haven comes from being able to build an army of cheap fliers by casting a Careful Study type effect. Being bottlenecked on tokens makes this new card feel pretty bad.
I like the fact that the tokens have a relevant type and a Zombie Butler flavoring, but I think this card is just too expensive to be good. I think this needed to trigger off of every discard or cost less mana in order to be closer to haven in terms of power level.