Eternal Shadow

The current cycle of eternals

.....┌─►..AIR..◄─┐
.....│.....................│
.....▼...................▼
.WATER...........EARTH
.....▲...................▲
......│....................│
......│....................│
.....▼...................▼
...FIRE...........SHADOW
.....▲...................▲
......│....................│
......└─►.LIFE.◄─┘

When your powers combine, I am Captain Planet.

Just to pool information from many different pages relating to this item. This item can be obtained from 5 different sources:

1. 
   
2. The Auction House
   
   • However, these may be very expensive depending on your server.
   
   
   
3. 
   
   
4. If you have Mining:
   
   • 
     
   • [object=189980] (mining level 400)
   • 
     
   • [object=189981] (mining level 425)
   • 
     
   • These two nodes appear to be most abundant in Icecrown, Northrend.
   • 
     
   • NOTE: if you see the nodes underground by [zone=4812], they are accessible by jumping down into a long, vertical tunnel around the middle of the outer-portion of the Citadel. It will dismount you if you fly down it. Don't fret; there is a portal next to a human child, within the cave below, that will port you back above ground.
   
   
   
5. 
   
   
6. Regular mob farming:
   
   • 
     
   • [npc=27382] located in Dragonblight, Northrend.
   • 
     
   • [npc=30842] located in Wintergrasp, Northrend.
   • 
     
   • [npc=30872] located in Wintergrasp, Northrend (only visible when your faction controls the zone).
   • 
     
   
   
   
7. 
   
   
8. If you have Frozen Orb:
   
   • 
     
   • You can purchase one Eternal Shadow from [npc=40160] in Dalaran, in exchange for one Frozen Orb, which can be obtained in 3 ways:
     
     1. 
        
     2. Auction House: may be expensive.
     3. 
        
     4. Purchasing one from: [npc=31580](A) or [npc=31582](H) with 75g.
     5. 
        
     6. Killing and looting the last boss of any heroic, Northrend dungeon.
     7. 
        
     
     
     
   • 
     
   
   
   
9. 
   
   
10. If you have Alchemy:
    
    • 
      
    • You can Transmute: Eternal Earth to Shadow (Must have alchemy level 405 and at least be character-level 45).
      
      • 
        
      • This pattern is "Discovered" according to Wowhead.
      • 
        
      • Eternal Earth = 10 Crystallized Earth.
      • 
        
      • Note: According to owlmanatt, this transmute's "cooldown is shared with the Cataclysm transmute CD."
      • 
        
      
      
    • 
      
      
    • You can Transmute: Eternal Life to Shadow (Must have alchemy level 405 and at least be character-level 45).
      
      • 
        
      • This pattern is "Discovered" according to Wowhead.
      • 
        
      • Eternal Life = 10 Crystallized Life.
      • 
        
      
      
    • 
      
    
    
    
    
    

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    EDIT: Updated information to reflect the removal of Justice Points in WoD and organized the post so it didn't take up so much room.