Gaaah, homebrewing random D&D classes takes a while....
I managed to use the homebrew classes the DMG presents as a base, and created the Undead Stalker and Witch classes...
I have this great idea for a horror campaign where the two of them are recurring antagonists, see... the Stalker, though somewhat morally upright, is bound by a blood pact to the Witch, who's old and crazy...