ExtremeLeveling Death Knight 55-58 Guide Horde & Alliance, Exclusively Released by SwagVault with the Permission of Author!

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Death Knight <55-58>
Ebon Hold
1. Take quest In Service Of The Lich King
a. Go done to the hall and turn it in
b. Take follow-up The Emblazoned Runeblade
2. Loot the Battle-worn-sword along the wall   
a. Stand next to a Runeforge, click the sword
b. Go back and turn in quest
c. Take next part: Runeforging: Preparation
For Battle
3. Go back to the Runforge
a. Use skill Runeforging on the sword
b. Turn in quest once complete
c. Take new quest The Endless Hunger

4. Go into the center
a. Click the skull lock on the wall
b. Kill unworthy initiate
c. Go and turn in quest
d. Take new one The Eye Of Acherus
5. Go back to the balcony
a. Turn in quest at the lich king
b. Take new follow up Death Comes From On High
6. Use the Eye controller on the balcony
a. Use skill siphon of acherus on arrowed location   
you can read the full article here http://blog.swagvault.com/2008/11/07/death-knight-55-58-guide/#more-3620