This probably isn't the ideal form of this deck, but when it goes off it's highly amusing.
The central combo is to get Means to an End
, Zhen-Zu, Hand of Nahid
, and (optionally) Katra, the Devoted
in play, and then make a ridiculously large board and eventually kill them by decking yourself and triggering the Means.
I'd welcome feedback on possible better card choices -- I just threw this together by including the central combo and then searching for "cultist".