A cube based on milling half of your deck at the beginning of the game
still in creation/testing
Where this cube stands on powerful effects has yet to be determined. Creatures like Tarmogoyf are abundant, and were the clear best cards in previous iterations.
Other things like graveyard hate still remain, and are a new contender for powerful cards. Further analysis of the limited amount of "graveyard" cards is necessary to determine if the cube is best with archetypes and elements of replayability, or just an amusing experience and guessing which cards are the broken ones.
Archetypes:
VERY slight zombie theme
Instants and sorceries - Draft a critical mass of instants and sorceries so your Magmatic Channelers and Ethereal Foragers are active once cast.
Graveyard Lockdown - Find Grafdigger's Cage and similar effects to compliment your pile of cards that don't do something in the graveyard.
Self-Mill - Thassa's Oracle and the gang are all here ;)
Storm - It's NOT an archetype! Well, not a good one, anyways. Find the graveyard-centric rituals and maybe piece together a tendrils or warren for 6 or 7. On its way out, possibly.
Black and something - Naturally, Black has a lot of graveyard cards. Thus, it is about twice as dense as other colors. There's plenty of room for drafters to be in black.