Asphyxiate
Lifts the enemy target off the ground, crushing their throat with dark energy and stunning them for 5 sec.
Tree position
In the Blood Death Knight talent tree, Asphyxiate sits in the Death Knight class talents, row 6 of 10. It is a single-point node. Its row opens once 8 points are spent in Class Talents.
Choice node
Asphyxiate shares its node with Death's Reach. A character takes one of the two.
Death's ReachIncreases the range of Death Grip by 10 yds. Killing an enemy that yields experience or honor resets the cooldown of Death Grip.
Connected above
The tree draws a line into Asphyxiate from Icy Talons, Anti-Magic Zone and Death Notes.

Anti-Magic ZonePlaces an Anti-Magic Zone for 6 sec, reducing the magic damage taken by party or raid members by 15%.
Death NotesRaise Ally costs 30 less Runic Power.
Connected below
Asphyxiate leads on to Suppression and Blood Scent.
SuppressionDamage taken from area of effect attacks reduced by 3%. When suffering a loss of control effect, this bonus is increased by an additional 6% for 6 sec.
Blood ScentIncreases Leech by 3%.
Same row
Also on this row: Ice Prison, Assimilation, Anti-Magic Barrier and Grip of the Dead.
Ice PrisonChains of Ice now also roots enemies for 4 sec but its cooldown is increased to 12 sec.
AssimilationThe cooldown of Anti-Magic Zone is reduced by 60 sec and its duration is increased by 2 sec.
Anti-Magic BarrierReduces the cooldown of Anti-Magic Shell by 20 sec and increases its duration and amount absorbed by 40%.

Talent trees
Asphyxiate is in the talent tree of 3 specializations. Death Knight: Blood (Tank), Frost (DPS), Unholy (DPS).
Asphyxiate Changes by patch
Tracked changes to this talent between game data builds, newest first.
- First tracked in the game data (patch 12.1.0)