Burn
A Modern deck, by Ari Lax
1st place at a tournament on 2018-12-15

Maindeck:

Creatures
4 Goblin Guide
1 Grim Lavamancer
4 Monastery Swiftspear

Enchantment Creatures
4 Eidolon of the Great Revel

Instants
4 Boros Charm
4 Lightning Bolt
4 Lightning Helix
4 Searing Blaze
4 Skullcrack

Sorceries
4 Lava Spike
4 Rift Bolt

Basic Lands
3 Mountain

Lands
2 Arid Mesa
4 Bloodstained Mire
4 Inspiring Vantage
2 Sacred Foundry
4 Scalding Tarn

Sideboard:
3 Tormod's Crypt
1 Grim Lavamancer
3 Rest in Peace
1 Path to Exile
3 Searing Blood
4 Smash to Smithereens