Lurrus Hardened Scales
A Pioneer deck, by flabbergasted
15th place at a tournament on 2020-05-10

Maindeck:

Artifact Creatures
4 Chamber Sentry
4 Hangarback Walker
4 Metallic Mimic
4 Steel Overseer
4 Stonecoil Serpent
4 Walking Ballista (Banned in Pioneer)

Creatures
4 Winding Constrictor

Enchantments
4 Hardened Scales

Instants
4 Fatal Push

Legendary Artifacts
2 The Ozolith

Basic Lands
2 Forest
2 Swamp

Lands
4 Blooming Marsh
4 Llanowar Wastes
4 Mutavault
4 Overgrown Tomb
2 Spire of Industry

Sideboard:
4 Damping Sphere
2 Soul-Guide Lantern
3 Scrapheap Scrounger
2 Scavenging Ooze
2 Dead Weight
1 The Ozolith
1 Lurrus of the Dream-Den