Like Yepes said ….I dont have any standard method - usually I will simply start out by looking at excisting careers and then simply changing up a few things ….
Now in my invisioning of a Black guard I would take the following approach:
Use a regular knight as base template …for skills and stats etc.
- SKILLS: A templar should definately have Piety, A black guard should perhaps have Education to reflect Academic Knowledge about the Undead.
- STATS: A black guard should perhaps have Willpower as a stat? (unless going for career option b) or c) in which case you could argue - that would replace the need for high willpower).
- # of Actions, Wounds etc.: I would stick with the default, perhaps giving the Black Guard another skill …and reduce another characteristic such as Actions or W or something.
Brainstorming options for career ability:
a) +1 damage vs. undead (booring - I dont like it but its consistent with the Witch Hunter vs. mutants)
b) Spend a fortune pt. to add an expertise die to any knowledge checks about the Undead or when rolling Discipline to resist effects caused by the Undead.
c) May substitute Piety for Discipline on any checks when dealing with the Undead.
When making the above I would also consider if I intended to make just a single career …or splitting it up in a more basic combat orientated (Basic or Advanced?) Black Guard … and a more advanced 'academic' (who actually what he is doing) Black Guard Captain (Advanced or Elite). - In the latter case I would go with NOT giving the junior Black Guard Education - and giving them career option c) and then giving the Captain Education skill and career option a) or b) and definately Willpower or Int as a prime stat.