I'm wondering how to make up the mechanics for a charcter concept. The idea is that of a witch that steals people's youth, keeping herself young. It is based on the witches in Stardust, for those that know the book/movie (both are great). In addition to simply stealing their youth, the witches also use it to power their magic, growing older the more they use magic.
My thinking was to take the Unaging virtue, and combine it with the False Power flaw from Realms of Power: The Infernal. That seems like an excellent fit thematically, but I'm not sure how to "subtly change" the Unaging virtue to make this concept work and be a fun, non-obstructing, element at the same time.
My best thinking at this point is to base things loosely on Personal Vis Source, but kinda letting go of game balance in favor of the mythic flavor. So we have:
(False) Unaging: Minor Virtue
(False) Personal Vis Source: Minor Virtue
False Power: Major Flaw
False Power: Minor Flaw
The character can harvest youth to power his magic. This is an Infernal power, althogh it appears Faerie to Magical or Faerie investigation. Harvesting can only be done once per year, and the amount of raw vis gained depends on the victim:
- human youth, 1 pawn
- human youth, innocent (without sin) 5 pawns
- Divine being, Might pawns
In-game, the victim is aged considerably, probably to the witche's true age. This may cause immediate death. This requires a night-long ritual, and cannot be reversed save by Divine intervention.
Keep track of Aging Points and crises and their affect on the charcter as normal. However, the stolen youth covers up these failings. It takes one pawn to cover each year of aging, with commensurate decrease effective decrepitue, loss of Characteristics, and so on, as determined by the group and SG. (You might want to simply note at what year these happen, and undo them when that year is 'undone' by the personal raw vis stock.)
You can spend the raw vis as normal, to improve your casting total or so on. However, as you lower your personal raw vis stock the effects of your true age gradually manifest.