Subversion

Subversion is a Death knight talent located in the 1st tier of the Blood Tree.

Definition
The act of overturning, or the state of being overturned; entire overthrow; an overthrow from the foundation; utter ruin; destruction; as, the subversion of a government; the subversion of despotic power; the subversion of the constitution.

Trivia
Subversion is the title of a song by the gothic metal band Moonspell.