3 Color BUR (Grixis)

Click here for visual deck (with images)
 
This is a theme deck; it tries to use only cards that are Black, Blue, *and* Red in color identity (except for a few artifacts and 2-color cards such as Lieges).
It includes every Black+Blue+Red Legend that exists.
To be silly, I usually start the game by randomly selecting one general from the choices below (I "mill" until I find a general, then reshuffle).
 
Mana Acceleration (8): Generals (10 possible): Spells (22):
1 Jet Medallion 1 Crosis, the Purger 1 Crosis's Charm
1 Urza's Filter 1 Garza Zol, Plague Queen 1 Cruel Ultimatum
1 Paradise Plume 1 Gwendlyn Di Corci 1 Drastic Revelation
1 Obelisk of Grixis 1 Lord of Tresserhorn 1 Elder Mastery
1 Crosis's Attendant 1 Mishra, Artificer Prodigy 1 Elemental Augury
1 Dimir Signet 1 Nicol Bolas 1 Grixis Charm
1 Rakdos Signet 1 Sedris, the Traitor King 1 Nicol Bolas, Planeswalker
1 Izzet Signet 1 Sol'kanar the Swamp King 1 Phyrexian Tyranny
  1 Tetsuo Umezawa 1 Rise // Fall
Lands (36): 1 Thraximundar 1 Slave of Bolas
1 Creeping Tar Pit   1 Unscythe, Killer of Kings
1 Darkwater Catacombs Creatures (24): 1 Resounding Scream
1 Dimir Aqueduct 1 Blood Tyrant 1 Dire Undercurrents
1 Drowned Catacomb 1 Fire-Field Ogre 1 Din of the Fireherd
1 Sunken Ruins 1 Grixis Grimblade 1 Torrent of Souls
1 Underground Sea 1 Grixis Sojourners 1 Sarkhan the Mad
1 Watery Grave 1 Kederekt Creeper 1 Cloven Casting
1 Badlands 1 Prince of Thralls 1 Invoke the Firemind
1 Blood Crypt 1 Sedraxis Specter 1 Quicksilver Dagger
1 Dragonskull Summit 1 Sewn-Eye Drake 1 Temporal Aperture
1 Graven Cairns 1 Demon's Herald 1 Mind's Eye
1 Lavaclaw Reaches 1 Dreadwing 1 Dragon Arch
1 Rakdos Carnarium 1 Grixis Battlemage  
1 Shadowblood Ridge 1 Hate Weaver  
1 Cascade Bluffs 1 Krovikan Elementalist  
1 Izzet Boilerworks 1 Morgue Toad  
1 Scalding Tarn 1 Nightscape Apprentice  
1 Steam Vents 1 Nightscape Battlemage  
1 Sulfur Falls 1 Nightscape Familiar  
1 Volcanic Island 1 Nightscape Master  
1 Crumbling Necropolis 1 Shadow Guildmage  
1 Crosis's Catacombs 1 Glen Elendra Liege  
1 Castle Sengir 1 Ashenmoor Liege  
1 Grixis Panorama 1 Mindwrack Liege  
1 Sulfur Vent 1 Niv-Mizzet, the Firemind  
1 Command Tower 1 Nin, the Pain Artist  
1 Reflecting Pool    
1 Meteor Crater    
1 Crypt of Agadeem    
1 Swamp    
1 Island    
1 Mountain    
1 Snow-Covered Swamp    
1 Snow-Covered Island    
1 Snow-Covered Mountain    
1 Sol Ring