Also how long do... these buffs last would last (guess this is an everybody question?
Or would you say they're constantly being refreshed?
Still no idea what the death knight buff did. Maybe vampiric touch?
Invisibility to undead would be a funny classic, or protection from health drain or negative energy?

Hope I'm not annoying just kind of spit balling around.

Like with the Jester could maybe tie in the NPCs we're with to em (maybe adding to the Ranger's grumpiness).
And put an online cybersecurity bounty to find info on the player.