R/B Burn
A Modern deck, by Pacoelflaco
1st place at a tournament in Magic Online on 2014-10-13

Maindeck:

Creatures
4 Goblin Guide
3 Grim Lavamancer
3 Monastery Swiftspear

Enchantment Creatures
4 Eidolon of the Great Revel

Instants
4 Lightning Bolt
4 Searing Blaze
4 Shard Volley
3 Skullcrack

Sorceries
4 Bump in the Night
4 Lava Spike
4 Rift Bolt

Basic Lands
5 Mountain

Lands
4 Arid Mesa
4 Blackcleave Cliffs
2 Blood Crypt
4 Scalding Tarn

Sideboard:
4 Dragon's Claw
2 Blood Moon
2 Dismember
2 Searing Blood
1 Skullcrack
2 Smash to Smithereens
2 Forked Bolt