Here is a general progression of trinkets for a DPS Death Knight in Northrend for World of Warcraft.

The bad news is you don’t have many options here. The good news is you don’t have many options here.

Starting off in Borean Tundra, you can quickly obtain Warsong’s Fervor and Serrah’s Star. You can then jump over to Howling Fjord and work towards the First Mate’s Pocketwatch. At level 71 and after completing the Battle for the Undercity quest chain, you are rewarded with the Medallion of Heroism.

At this point, you won’t have to worry about trinket upgrades until level 77. When you hit 77, start working towards reputation gains with The Oracles faction. At exalted, you have the ability to purchase the Oracle Talisman of Ablution as an upgrade over the pocketwatch. Keep an eye out for the Nobles cards on the auction house and start building your Nobles Deck.

1. Level 68 Warsong’s Fervor (496)
   Obtained by: Quest Reward – We Strike! (Borean Tundra)
2. Level 69 Serrah’s Star (608)
   Obtained by: – Keep the Secret Safe (Borean Tundra)
3. Level 69 First Mate’s Pocketwatch (708)
   Obtained by: – The Jig is Up (Howling Fjord)
4. Level 71 Medallion of Heroism (800)
   Obtained by: – The Battle For The Undercity (Dragonblight)
5. Level 77 Oracle Talisman of Ablution (1136)
   Obtained by: The Oracles (Exalted)
6. Level 80 Darkmoon Card: Greatness (2805)
   Obtained by: – Darkmoon Nobles Deck (Darkmoon Faire)

Prices and links provided by Wowhead. Gear score provided by Loot Rank (based on the PvE Death Knight template).