Shapeshifter [Tribal]

Click here for visual deck (with images)
 
This is a 38 card sub-deck. It is added to the 68 card Main Tribal Deck. Remove the 6 creatures there.
You might be wondering why I remove Changelings in the Main Tribal Deck, then re-add them here. That's because I actually have more than one "Main Tribal Deck" built, that have different cards in them. Main Tribal II Deck, for example, doesn't have changelings in it, it has 6 other creatures like Sakashima. I'll upload Main Tribal II sometime soon.
 
Mana / Mana Accel. (6): Creatures (32): Spells (0): Sideboard (Omitted/Cut card ideas):
1 Steam Vents 1 Clone Shell   1 Changeling Berserker
1 Breeding Pool 1 Death-Mask Duplicant    
1 Hallowed Fountain 1 Duplicant    
1 Watery Grave 1 Flowstone Sculpture    
1 Godless Shrine 1 Urza's Avenger    
1 Stomping Ground 1 Cemetery Puca    
  1 Dimir Doppelganger    
  1 Evil Twin    
  1 Halfdane    
  1 Cairn Wanderer    
  1 Volrath the Fallen    
  1 Anthroplasm    
  1 Body Double    
  1 Clone    
  1 Cryptoplasm    
  1 Escaped Shapeshifter    
  1 Greater Morphling    
  1 Jodah's Avenger    
  1 Morphling    
  1 Phyrexian Metamorph    
  1 Quicksilver Gargantuan    
  1 Shapesharer    
  1 Vesuvan Doppelganger    
  1 Vesuvan Shapeshifter    
  1 Chameleon Colossus    
  1 Changeling Titan    
  1 Thornling    
  1 Taurean Mauler    
  1 Torchling    
  1 Avian Changeling    
  1 Changeling Hero    
  1 Mirror Entity