Mono-Green Ramp
A Pioneer deck, by Kristopher Hirshberger
3rd place at a tournament in North Las Vegas, Nevada, United States on 2020-01-11
As reported at http://www.starcitygames.com

Maindeck:

Artifacts
3 Perilous Vault

Artifact Creatures
2 Walking Ballista (Banned in Pioneer)

Creatures
4 Arboreal Grazer
3 Cavalier of Thorns
3 Elvish Rejuvenator
2 Gilded Goose
1 Llanowar Elves

Instants
3 Spatial Contortion

Legendary Artifact Creatures
3 Golos, Tireless Pilgrim

Legendary Creatures
1 Kozilek, the Great Distortion
1 Ulamog, the Ceaseless Hunger

Legendary Planeswalkers
2 Ugin, the Ineffable
3 Ugin, the Spirit Dragon

Sorceries
3 Nissa's Pilgrimage

Basic Lands
8 Forest

Lands
1 Arch of Orazca
2 Blast Zone
1 Cascading Cataracts
4 Castle Garenbrig
4 Radiant Fountain
1 Sanctum of Ugin
1 Scavenger Grounds
4 Shrine of the Forsaken Gods

Sideboard:
2 Damping Sphere
2 Ratchet Bomb
3 Jaddi Offshoot
3 Thought-Knot Seer
1 World Breaker
1 Return to Nature
1 Unravel the Aether
1 Emrakul, the Promised End
1 Broken Bond