Doom Touched Warrior

Doom Touched Warrior can be found in Naxxramas. These humanoids are likely going through some complex process to become Death Knights.

Abilities

 * Aggro Wipe - These humanoids appear to wipe aggro every few seconds, much like Battleguard Sartura.

Strategies
Have a warrior use Taunt (warrior ability) and Mocking Blow to keep the mob in place and burn them down. They are immune to roots and snares, but can be stunned. Stun lock them for a quick kill.