A few months back someone (Timothy) posted what he thought were reasonable assumptions for what sort a longevity ritual could be created by the best specialist in the order. I didn't agree completely. I have some different base assumptions about the prevalence of virtues within the order and so I came up with different numbers.
What do the numbers of the greatest longevity ritual specialist within the order look like?
Certainly with a population of over 1000 magi with every magi needing at least one longevity ritual perhaps two or three during their lifetime there is a demand. I see the primary customers of the longevity ritual specialist as magi in their 80's and 90's who's first longevity ritual is fading and who have the means to command the attention of the specialist.
I think that a specialist will probably only wish to do a ritual a year at most (no magus wants to spend all of his time working for the goals of others rather than his own goals) this means that demand will outstrip supply so the compensation offered to the very best specialists might be quite extravagant.
With demand greater than supply there is no particularly pressing reason for a longevity ritual specialist to really push the envelope, competence alone will make you rich beyond the dreams of avarice, there's no real benefit to going overboard about it.
Age: I'm going to assume that the best longevity specialists are 80 -100 years out of apprenticeship. Certainly there may be older magi in the setting but there is no compelling reason to believe that these magi are longevity specialists. there are only about 1200 magi in the order as presented in published material. I don't think that more than a small fraction of them are interested in becoming longevity specialists and only a small part of that fraction will have the virtues necessary to really excel. This is the sort of datum that you need to have the final calculations for before you start the calculations, (inconvenient really). I'm going to assume 90 years beyond apprenticeship.
Virtues and flaws: One factor that I've seen other people include in their calculations that seems to make a huge difference is the assumption that the best specialists will have an applicable magical focus. I don't buy this. There are millions of conceivable magical foci from aphids to zithers, I'll concede that there may well be a maga or two within the order that has a magical focus with aging but I don't believe that there has to be and if there is such a maga she is (IMO) more likely to be interested in studying school of Apromor Flambeau magics than in becoming a longevity specialist. And in the unlikely case that there is a magus or maga with an ageing focus and that magus or maga decides to pursue longecity magics with reasonable dedication they still may not have other applicable virtues or they may be as of yet to young to achieve great understanding of the relevant arts.
I'll assume that between the three relevant scores (Creo, Corpus and Magic Theory) they have two affinities (one in magic theory and one in creo) and another applicable virtue of +3 such as puissant art or cyclic magic) that seems appropriate to me. (the idea of three affinities and three puissant scores I don't find believable). I'll also give them a +3 intelligence score (high but not requiring a virtue or 11th magnitude rituals).
Experience points, assuming that our specialist has been exceedingly diligent during his career I'll apply one half of all of the experience points earned to the three relevant scores. so
75 xp from apprenticeship
- 90 years worth of xp. It's time for another assumption, our specialist will spend 2/3ds of his or her time gaining xp and one third of his or her time in the laboratory or otherwise occupied. The quick advancement rules say 30 xp per year I think that this is appropriate, it is probably fairly cruel to young magi and generous to older magi who've read all of the high quality tractatus and can no longer study from Summae or vis, (yet it also excludes exposure experience and so it's really a fairly good guess IMO).
So 90 years but only 60 years gaining xp, and only half of these years, 30, spent on the relevant arts and magic theory. so 900 xp
A nice way to spend this is:
art 1 325 xp gets us level 25
Magic theory 220xp with affinity nets 330xp and gets us to level 11
leaving 365 with an affinity giving us 533 for a score of 32
Help in the lab familiar assume Magic theory 8 -3 intellegence = 5
client magus int + magic theory =11
one apprentice of either the client or the specialist int + magic theory = 6
the Lab It makes sense to create a lab entirely for the creation of longevity rituals, some of the clients would gladly create it for the benefit of the lab being used to their benefit. I immagine a greater focus + a major feature, a minor feature for creo or corpus and +2 general quality
giving a total bonus of +8
Aura lets give him a better than average aura of 4
So our final lab total is
Magic theory 11
laboratory assistants 22
for a total of [size=150]108[/size]
This longevity ritual gives a bonus of 22 to aging rolls allowing a magus to live well into their 200's (barring botches) but not into their 300s.[/u][/b]