So, the real rough idea here is to have Tormod, the Desecrator in play and then mill myself into a shuffle eldrazi. Inverter of Truth for instance can do this in a spicy way that would give me something like 60-80 zombie tokens in one shot (It will find a shuffle eldrazi and move my grave and library through the grave for me) . In general I don't have a ton of effects that are only mill. I tended to prefer some of the draw effects that also throw things into the bin but I kept some of the mill effects that do ongoing solid mill effects.
I considered using Sakashima of a Thousand Faces as the partner for this deck but I felt like it had a lot more concerns with spot removal as well as being a little more winmore. Esior, Wardwing Familiar curves better with Tormod in being cast before him and giving him protection to be cast on curve.
I built this list with more of a proactive approach to things. There are a few answers but they are a little more tempo based as well as some counter magic to try to keep myself in play. The goal of this build as I have it is more as a tempo proactive deck than a reactive one.
Decklist
Approximate Total Cost: