U/R Eldrazi
A Modern deck, by Jiachen Tao
1st place at a tournament in Atlanta, Georgia, United States on 2016-02-05
As reported at http://magic.wizards.com/en/events/coverage/ptogw

Maindeck:

Creatures
4 Drowner of Hope
4 Eldrazi Mimic
3 Eldrazi Obligator
4 Eldrazi Skyspawner
4 Endless One
4 Reality Smasher
2 Ruination Guide
4 Thought-Knot Seer
4 Vile Aggregate

Instants
3 Dismember

Basic Lands
2 Island

Lands
3 Cavern of Souls
4 Eldrazi Temple
4 Scalding Tarn
4 Shivan Reef
2 Steam Vents

Legendary Lands
4 Eye of Ugin (Banned in Modern)
1 Gemstone Caverns

Sideboard:
2 Chalice of the Void
1 Ratchet Bomb
2 Relic of Progenitus
1 Spellskite
2 Gut Shot
3 Hurkyl's Recall
3 Stubborn Denial
1 Tomb of the Spirit Dragon