I don’t have a good name for it, but it’d be interesting for Necromancer specialization to center around “dying”… meaning your new skills aren’t available until you are downed/stomped, you then rise from the grave as a terrifying specter or skeletal warrior and have access to a number of skills.
Catch would be, if you don’t kill an enemy within (insert number) seconds, you die for real and have to respawn.
In pvp this would create a need for the other team to identify the spec and avoid killing it for fear of the dark retribution that would ensue.