Yesterday, we looked at an Unholy AoE DPS build. Today, we’re going to delve into Blood DPS. Blood is awesome because it’s old-school melee dps. This spec offers the highest theoretical Single-Target damage.
Strengths
At the moment, Unholy Single-Target specs appear to have a slight dps lead, but that is subject to change.
High Single-Target DPS – Highest possible theoretical single-target dps of all Death Knight builds.
Scales well with two or three targets
Raid Utility – Raid utility in the form of Abomination’s Might and Hysteria.
Improved Survivability – You gain improved survivability thanks to Improved Blood Presence, enhanced Death Strike, and Blood Worms.
Weaknesses
Raid buffs are duplicable; they aren’t specific to the Death Knight.
Works best with excellent connectivity, lag results in missed GCD’s and diseases can fall off
Weak AoE performance, Blood, at least this build, focuses more on Single-Target DPS.
A Note On DRW
Dancing Rune Weapon is your premium Runic Power Dump for Blood spec. Remember that DRW gains damage based on the buffs that you have at the time. You want to maximize your temporary buffs when using DRW. First, make sure that your diseases are up and at their peak duration. Secondly, make sure that Hysteria is up, and that you are ready to use your Trinkets. Most importantly, make sure that you are at maximum RP. Sometimes, you can’t coordinate all of these while keeping with your current rotation, or Hysteria may not be up because it has a longer cooldown, but try to meet as many of these conditions as you can to maximize your damage.
51/0/20 Rotation
Rotation 1
Dump( 
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Rotation 2
Dump( 
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Glyphs
Glyph of Dancing Rune Weapon
Glyph of Death Strike
Glyph of Dark Death
Stat Weights
For information on what these stat weights mean, please see my BiS post
Weapon DPS 9.89
Strength 2.89
Armor Penetration 2.75
Hit Rating (to cap) 2.51
Haste Rating 1.5
Expertise Rating 2.47
Crit Rating 1.56
Agility 1.37
Attack Power 1
Stat Weights via ElitistJerks