Anti-Magic Barrier
Reduces the cooldown of Anti-Magic Shell by 20 sec and increases its duration and amount absorbed by 40%.
Tree position
In the Blood Death Knight talent tree, Anti-Magic Barrier 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.
Connected above
The tree draws a line into Anti-Magic Barrier from Death Defiance, Unholy Bond and Anti-Magic Zone.
Death DefianceThe cooldown of Death Pact is reduced by 30 sec, and you receive 50% increased healing while its healing absorb is active.
Unholy BondIncreases the effectiveness of your Runeforge effects by 20%.
Anti-Magic ZonePlaces an Anti-Magic Zone for 6 sec, reducing the magic damage taken by party or raid members by 15%.
Connected below
Anti-Magic Barrier leads on to Blood Scent and Unholy Endurance.
Blood ScentIncreases Leech by 3%.
Unholy EnduranceIncreases Lichborne duration by 2 sec and reduces the cooldown by 30 sec.
Same row
Also on this row: Ice Prison, Asphyxiate or Death's Reach, Assimilation and Grip of the Dead.
Ice PrisonChains of Ice now also roots enemies for 4 sec but its cooldown is increased to 12 sec.
AsphyxiateLifts the enemy target off the ground, crushing their throat with dark energy and stunning them for 5 sec.
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.
AssimilationThe cooldown of Anti-Magic Zone is reduced by 60 sec and its duration is increased by 2 sec.

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