Tribal

Click here for visual deck (with images)
 
This is a 68 card partial deck. I have many 32 card sub-decks (one for each tribe, for example, Drakes). I add (swap in) one of these sub-decks to this 68 card partial deck, to make a complete 100 card EDH deck.
The sub-decks are usually 21 creatures, 5 spells, 5 lands, and 1 mana acceleration. So the complete 100 card deck is usually 28 creatures (counting the general), 28 spells, 36 lands, and 8 mana acceleration.
For ease of swapping, I put a little sticker of a star on the lower left corner of each card of the sub-decks, so I can quickly find them and pull them all out.
Some of the sub-decks (the larger tribes) have 38 cards instead of 32 (an extra 6 creatures). In this case, I remove the 6 creatures from this deck.
I made these decks "modular" because my tribal decks had so many cards in common. I experimented with 50+50 cards, 70+30 cards, then finally settled on this 68+32 card setup. It also allows me to potentially carry a very large number of decks in one long box. I'm always surprised at how differently the decks play, considering 68 of the cards are the same.
I (somehow) got into the habit of swapping out the Sol Ring for an Oblivion Stone sometimes, depending on my impression of the play group / environment. I realize this is the not the most logical two cards to swap (one mana card for one non-mana card), but I've been doing it for a while, so I thought I'd mention it.
 
Mana Acceleration (7): General (1): Spells (23): Sideboard (Omitted/Cut card ideas):
1 Coalition Relic 1 Karona, False God 1 Adaptive Automaton 1 Ghostly Changeling
1 Fellwar Stone   1 Door of Destinies 1 Clone
1 Gilded Lotus Creatures (6): 1 Mind's Eye 1 Sakashima the Impostor
1 Thran Dynamo 1 Cairn Wanderer 1 Riptide Replicator 1 Vesuvan Doppelganger
1 Urza's Incubator 1 Shapesharer 1 Temporal Aperture 1 Vesuvan Shapeshifter
1 Mirari's Wake 1 Chameleon Colossus 1 Aura Shards 1 Game-Trail Changeling
1 Mana Reflection 1 Taurean Mauler 1 Collective Blessing 1 War-Spike Changeling
  1 Avian Changeling 1 Decimate 1 Izzet Boilerworks
Lands (31): 1 Mirror Entity 1 Maelstrom Nexus 1 Flooded Grove
1 Underground Sea   1 Violent Ultimatum 1 Timetwister
1 Bayou   1 Aphetto Dredging 1 Mistform Ultimus
1 Badlands   1 Patriarch's Bidding 1 Orzhov Basilica
1 Scrubland   1 Call to the Kindred 1 Boros Garrison
1 Tropical Island   1 Distant Melody 1 Krosan Verge
1 Volcanic Island   1 Rite of Replication 1 Staff of Domination
1 Tundra   1 Defense of the Heart 1 Akroma's Memorial
1 Taiga   1 Genesis Wave 1 Simic Growth Chamber
1 Savannah   1 Lurking Predators 1 Belbe's Portal
1 Plateau   1 Beastmaster Ascension  
1 Arcane Sanctum   1 Tribal Unity  
1 Crumbling Necropolis   1 Mana Echoes  
1 Jungle Shrine   1 Shared Animosity  
1 Savage Lands   1 True Conviction  
1 Seaside Citadel      
1 Creeping Tar Pit      
1 Lavaclaw Reaches      
1 Celestial Colonnade      
1 Raging Ravine      
1 Stirring Wildwood      
1 Mutavault      
1 Exotic Orchard      
1 Reflecting Pool      
1 Mosswort Bridge      
1 Spinerock Knoll      
1 Windbrisk Heights      
1 Command Tower      
1 Golgari Rot Farm      
1 Gruul Turf      
1 Selesnya Sanctuary      
1 Sol Ring / Oblivion Stone