Mono-Black Aggro
A Pioneer deck, by Steven Sherwin
1st place at a tournament in Orlando, Florida, United States on 2019-12-01
As reported at http://www.starcitygames.com

Maindeck:

Artifacts
4 Smuggler's Copter (Banned in Pioneer)

Artifact Creatures
4 Scrapheap Scrounger

Creatures
4 Bloodsoaked Champion
4 Knight of the Ebon Legion
4 Murderous Rider
4 Night Market Lookout
1 Spawn of Mayhem

Instants
4 Fatal Push

Legendary Creatures
3 Rankle, Master of Pranks

Sorceries
4 Thoughtseize

Basic Lands
15 Swamp

Lands
4 Castle Locthwain
4 Mutavault

Legendary Lands
1 Urborg, Tomb of Yawgmoth

Sideboard:
1 Spawn of Mayhem
2 Virulent Plague
2 Bile Blight
2 Dark Betrayal
1 Infernal Reckoning
2 Noxious Grasp
1 Kalitas, Traitor of Ghet
2 Duress
1 Legion's End
1 Witch's Vengeance