Dega Midrange

I made it independently before I found the proper name for the W/B/R combination (named after Degavolver, appropriately enough), and I've since included some choices that I've seen from others.

More details about the deck here.

Main board presence:
1 Assemble the Legion
3 Boros Reckoner
2 Brimaz, King of Oreskos
2 Desecration Demon
1 Elspeth, Sun's Champion

Lifegain:
2 Archangel of Thune
2 Blood Baron of Vizkopa
1 Obzedat, Ghost Council
1 Whip of Erebos

Removal:
3 Anger of the Gods
3 Banishing Light
4 Dreadbore
4 Magma Jet
2 Mizzium Mortars

Response against mass removal:
3 Boros Charm

Card acceleration:
2 Underworld Connections

Shock lands:
4 Blood Crypt
4 Godless Shrine
4 Sacred Foundry

Luck manipulation:
2 Temple of Malice
3 Temple of Silence
4 Temple of Triumph

Strictly-best 2+ colour land in standard:
3 Mana Confluence

Sideboard:
1 Deicide
2 Hero's Downfall
1 Rest in Peace
2 Revoke Existence
2 Sin Collector
2 Slaughter Games
3 Thoughtseize
2 Underworld Connections