Colorless Eldrazi
A Modern deck, by William Gentry
2nd place at a tournament in Kennesaw, Georgia, United States on 2019-06-15
As reported at http://www.starcitygames.com

Maindeck:

Artifacts
4 Chalice of the Void
4 Expedition Map
3 Mind Stone

Artifact Creatures
2 Walking Ballista

Creatures
4 Matter Reshaper
4 Reality Smasher
4 Thought-Knot Seer

Instants
3 Dismember

Legendary Planeswalkers
4 Karn, the Great Creator
2 Ugin, the Ineffable

Tribal Sorceries
2 All Is Dust

Basic Lands
2 Wastes

Lands
2 Blast Zone
1 Cavern of Souls
4 Eldrazi Temple
3 Ghost Quarter
4 Urza's Mine
4 Urza's Power Plant
4 Urza's Tower

Sideboard:
1 Basilisk Collar
1 Crucible of Worlds
1 Ensnaring Bridge
1 Grafdigger's Cage
1 Liquimetal Coating
1 Mycosynth Lattice (Banned in Modern)
1 Sorcerous Spyglass
1 Tormod's Crypt
1 Witchbane Orb
1 Walking Ballista
1 Ravenous Trap
2 Spatial Contortion
2 Surgical Extraction