Quote:
Originally Posted by khorboth
If I understand this correctly, it could be more simply phrased as:
Spells with a Magery prerequisite receive a negative equal to the amount of that prerequisite.
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Afraid not. The thing that makes it more complicated is:
Quote:
Originally Posted by VIVIT
. . . magery prerequisites would be counted recursively: the penalty applied to a spell would be equal to the highest magery prerequisite in your prerequisite chain to that spell.
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So if you're calculating your penalty for a spell, you have to trace back through your prerequisites for it, find the largest magery requirement, and use that. This can't be pre-calculated for all spells, because of prerequisites like "10 Food spells" or "One spell from each of six colleges." It's different for every character.
In fact, I realise there's an aspect that makes it worse. It is at least theoretically possible that learning a spell could reduce your skill with one you already know, if you learn a spell with a high magery requirement that is in an alternative prerequisite chain for a spell you already know. You can fix that by saying that the penalty is the lowest one in all your alternative prerequisite chains, but that makes working out the answer even more complicated.