A quick update, the Oblivion Build has been doing phenomenal since I added 4 Leyline to the board.

Manabase
3 Eye of Ugin
4 Eldrazi Temple
4 Ancient Tomb
3 City of Traitors
4 Cloudpost
3 Glimmerpost
3 Vesuva
2 Urborg, Tomb of Yawgmoth

Core Cards
4 Chalice of the Void
4 Endless One
4 Thought-Knot Seer
4 Reality Smasher
4 Oblivion Sower
1 Ulamog, the Ceaseless Hunger

Flex Slots
4 Eldrazi Mimic
4 Matter Reshaper
2 Dismember
2 Umezawa's Jitte
1 Phyrexian Revoker

Sideboard
4 Leyline of the Void
2 Phyrexian Revoker
2 Ratchet Bomb
2 Thorn of Amethyst
2 Trinisphere
2 All is Dust
1 Duplicant

The past two weeks and over 100 matches, I've yet to face an unfavorable matchup for this list!