Oros the Avenger

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Click here for my EDH Commander decks
 
Change color effects
Set toughness effects
Deathtouch/Unblockable for Oros
Extra attack steps
All the creatures in the deck are white, so they don't get hosed
This deck requires multiple cards to interact in order to win, so I took the (unusual for me!) step of adding in a bunch of tutors.
 
Mana Acceleration (8): General (1): Spells (38): Sideboard (Omitted/Cut card ideas):
1 Coalition Relic 1 Oros, the Avenger 1 Basilisk Collar 1 Savage Beating
1 Dreamstone Hedron   1 Distorting Lens 1 Greater Realm of Preservation
1 Gilded Lotus Creatures (17): 1 Gorgon Flail 1 Devout Lightcaster
1 Thran Dynamo 1 Aurelia, the Warleader 1 Isochron Scepter 1 Major Teroh
1 Worn Powerstone 1 Deathbringer Liege 1 Mind's Eye 1 Lawbringer
1 Boros Keyrune 1 Gisela, Blade of Goldnight 1 Planar Portal 1 Lightbringer
1 Orzhov Keyrune 1 Tariel, Reckoner of Souls 1 Quietus Spike 1 Dual Casting
1 Thunder Totem 1 Adarkar Valkyrie 1 Skyblinder Staff 1 Caged Sun
  1 Akroma, Angel of Wrath 1 Spellbinder 1 Silver Seraph
Lands (36): 1 Crovax, Ascendant Hero 1 Staff of Nin 1 Teysa, Orzhov Scion
1 Badlands 1 Elesh Norn, Grand Cenobite 1 Trailblazer's Boots 1 Blinding Light
1 Scrubland 1 Exorcist 1 Urza's Blueprints 1 Saltblast
1 Plateau 1 Glory 1 Whispersilk Cloak 1 Fireshrieker
1 Blood Crypt 1 Graven Dominator 1 Debtors' Knell 1 Grappling Hook
1 Godless Shrine 1 Ivory Giant 1 Aphotic Wisps 1 Crackdown
1 Sacred Foundry 1 Lightwielder Paladin 1 Deathlace 1 Holy Light
1 Rakdos Carnarium 1 Northern Paladin 1 Demonic Tutor 1 Nightcreep
1 Orzhov Basilica 1 Odric, Master Tactician 1 Diabolic Revelation 1 Darkest Hour
1 Boros Garrison 1 Pentarch Paladin 1 Diabolic Tutor 1 Thran Lens
1 Graven Cairns 1 Southern Paladin 1 Grave Betrayal 1 Waves of Aggression
1 Fetid Heath   1 Grim Tutor 1 World at War
1 Rugged Prairie   1 Phyrexian Arena 1 Relentless Assault
1 Dragonskull Summit   1 Sudden Spoiling 1 Celestial Dawn
1 Isolated Chapel   1 Touch of Darkness 1 Wild Ricochet
1 Clifftop Retreat   1 Aggravated Assault 1 Reverberate
1 Arid Mesa   1 Chaoslace 1 Radiate
1 Bloodstained Mire   1 Crimson Wisps 1 Chandra, the Firebrand
1 Command Tower   1 Dwarven Song 1 Fork
1 Marsh Flats   1 Gratuitous Violence 1 Mirari
1 Reflecting Pool   1 Incite 1 Aurora Griffin
1 Rogue's Passage   1 Rage Reflection 1 Cloudchaser Kestrel
1 Slayers' Stronghold   1 Reiterate 1 Eight-and-a-Half-Tails
1 Spinerock Knoll   1 Singe 1 Purelace
1 Sunhome, Fortress of the Legion   1 Holy Mantle 1 Grave Servitude
1 Thespian's Stage   1 Humble 1 Repentant Vampire
1 Vault of the Archangel   1 Mass Calcify 1 Sorceress Queen
1 Windbrisk Heights   1 Spirit Mantle 1 Xathrid Gorgon
2 Swamp   1 True Conviction 1 Ersatz Gnomes
2 Mountain     1 Scuttlemutt
4 Plains     1 Karn, Silver Golem
1 Sol Ring     1 Alchor's Tomb
      1 Heaven's Gate
      1 Niveous Wisps
      1 Opalescence
      1 Possessed Nomad