The Antiquarian Cube is my primary personal cube. Over the past five years of curation my goal has been to create an complex value-driven environment where interaction is good, but not clearly the best thing to be doing. The cube skews towards my personal card preferences, with the art or flavor sometimes being a major reason for inclusion/exclusion.
Some general notes about the cube
I was considering adding delver to my peasant cube even though it really doesn't fit my goals there and would have been the only double-faced card in the cube. However, I realized that I could just put my nice foil copy here instead!
Cast Out has art I don't like, and I already have a several of exile removal effects which punishes the graveyard strategies that I'd like to be good. No one's really just running astral drift straight so I don't feel strongly compelled to keep it in for that reason. I won't miss the card.