B/R Dragons
A Standard deck, by Eliott Boussaud
1st place at a tournament in Prague, Czech Republic on 2015-08-29
As reported at http://magic.wizards.com/en/events/coverage/gppra15

Maindeck:

Artifact Creatures
2 Hangarback Walker (Not currently legal in Standard)

Creatures
4 Stormbreath Dragon (Not currently legal in Standard)
4 Thunderbreak Regent (Not currently legal in Standard)

Enchantments
1 Outpost Siege (Not currently legal in Standard)

Instants
2 Bile Blight (Not currently legal in Standard)
4 Draconic Roar (Not currently legal in Standard)
4 Hero's Downfall (Not currently legal in Standard)
4 Kolaghan's Command (Not currently legal in Standard)
2 Magma Spray (Not currently legal in Standard)
1 Murderous Cut (Not currently legal in Standard)

Legendary Creatures
2 Kolaghan, the Storm's Fury (Not currently legal in Standard)

Sorceries
1 Crux of Fate (Not currently legal in Standard)
4 Thoughtseize (Not currently legal in Standard)

Basic Lands
6 Mountain
5 Swamp

Lands
3 Bloodfell Caves (Not currently legal in Standard)
4 Bloodstained Mire (Not currently legal in Standard)
2 Haven of the Spirit Dragon (Not currently legal in Standard)
4 Temple of Malice (Not currently legal in Standard)

Legendary Lands
1 Urborg, Tomb of Yawgmoth (Not currently legal in Standard)

Sideboard:
4 Goblin Rabblemaster (Not currently legal in Standard)
1 Outpost Siege (Not currently legal in Standard)
3 Foul-Tongue Invocation (Not currently legal in Standard)
2 Chandra, Pyromaster (Not currently legal in Standard)
2 Anger of the Gods (Not currently legal in Standard)
1 Crux of Fate (Not currently legal in Standard)
2 Duress