Frost DPS is my favorite spec, I guess I just like the style. It suits me.

Following Naxxramas, Blizzard pretty much killed Frost-based Dual-Wielding specs (and Unholy-Based Dual-Wielding specs). The problem was that these specs relied on Icy Touch spam to make ridiculously consistent Killing Machine procs. At the time, Killing Machine wasn’t really normalized, so the faster your weapons were, the more procs you could get, essentially buffing your crit percentages to insanely high numbers at the time.

In response to this, Blizzard nerfed Icy Touch, and some Sigils that took advantage of it. They also normalized Killing Machine to a procs-per-minute setup. The damage of Dual-Wielding specs was slaughtered, pushing most dps Death Knights to Unholy and Blood.

Popular demand forced Blizzard to redesign the Frost tree and make Dual-Wielding a viable option again. Nerves of Cold Steel, Threat of Thassarian, and changes to Obliterate were added to essential turn Frost into the Dual-Wielding tree. Frost is an iconic path for Death Knights in Wow Lore, while Dual-Wielding is a play-style that many players are drawn to. Part of it is rebellion against the norm and being different, part of it I believe is just personal preference.

The frost tree has always been more magic damage than melee. While Blood fills the melee-based roll, and Unholy is traditionally for AoE, Frost fills a spot in between. In a fight like Lady Deathwhisper a Death Knight can help kill those mobs that your Warriors, Paladins, or Hunters would be otherwise unable to kill effectively.

Strengths
* Frost excels at single-target damage, while still retaining competitive AoE damage via Howling Blast.
* Frost relies more heavily on magic damage than Blood.
* Frost provides raid utility in the form of Imp. Icy Talons, a haste buff similar to Windfury.
* Enhanced damage and survival via Unbreakable Armor.

Weaknesses
* Other classes can provide similar raid buffs.
* Weaker AoE damage performance.
* Weaker defensive capabilities, lacking the avoidance and mitigation of Blood or Unholy.
* At this time Blood or Unholy have a slight dps advantage.

Weapon Speed and Frost DPS

In previous incarnations, Dual-Wielding relied on Fast\Fast weapons or Slow\Fast weapons to achieve maximum dps. Since Killing Machine, one of Frost’s best procs is now based on procs per minute, slower weapon speeds are best. Get yourself a good 2.60 swords or axes (or maces if you’re a dorf) and you’ll achieve maximum dps. For best effect, you should use Fallen Crusader on your MH and Razorice on your OH.

Glyphs

Glyph of Icy Touch
Glyph of Obliterate
Glyph of Frost Strike

0/54/17 Rotation

Rotations for Frost are based on a priority system. Which will look kinda like this: Frost Strike (Killing Machine) > Diseases (IT, PS) > Howling Blast (if Rime and Killing Machine are up) > Obliterate > Blood Strike > Frost Strike. A priority system means that the priority queue is evaluated when deciding which ability to use; instead of following a set rotation. Please keep this in mind as you consider the rotation below.

General Frost rotations will look something like this.

Rotation 1
     Dump(  )

Rotation 2
    Dump(  )

NOTE: This ability list is prone to change based on your Killing Machine and Rime procs. For instance, when you have a Killing Machine and Rime proc, you should use Howling Blast. When you have a Killing Machine proc, you should use KM prior to hitting Icy Touch again. Also, I'm still trying to find some good stat weights for Frost.