Big Red
A Pioneer deck, by Mac Ira
7th place at a tournament in Newington, Connecticut, United States on 2020-01-12
As reported at http://www.starcitygames.com

Maindeck:

Creatures
4 Bonecrusher Giant
3 Glorybringer
3 Goblin Chainwhirler
4 Goblin Rabblemaster
4 Soul-Scar Mage

Instants
4 Lightning Strike
1 Shock
3 Wild Slash

Legendary Artifacts
2 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
3 Mutavault
4 Ramunap Ruins

Sideboard:
3 Tormod's Crypt
2 Eldrazi Obligator
3 Scab-Clan Berserker
1 Abrade
3 Chandra's Defeat
1 Chandra, Awakened Inferno
2 Mizzium Mortars