Mono Red Aggro
A Pioneer deck, by Kevin Hoang
1st place at a tournament in Columbus, Ohio, United States on 2020-01-05
As reported at https://old.starcitygames.com/events/040120_columbus.html

Maindeck:

Creatures
4 Bonecrusher Giant
4 Glorybringer
4 Goblin Rabblemaster
2 Legion Warboss
4 Soul-Scar Mage

Instants
4 Lightning Strike
4 Wild Slash

Legendary Artifacts
1 Embercleave

Legendary Creatures
2 Kari Zev, Skyship Raider
2 Torbran, Thane of Red Fell

Legendary Planeswalkers
3 Chandra, Torch of Defiance

Basic Lands
16 Mountain

Lands
2 Castle Embereth
4 Mutavault
4 Ramunap Ruins

Sideboard:
4 Tormod's Crypt
4 Scab-Clan Berserker
2 Abrade
2 Fry
1 Embercleave
2 Mizzium Mortars