- If there's another subject you think the Grey College should offer, let me know.
I'm guessing ciphers and codebreaking fall under "Intrigue and Tradecraft"?. It seems a wide subject by the name, covering that, disguises, infiltration, forgery, etc.
It's a bit of an odd drawback, in one way, that Mathilde's background education is so good - it makes it harder to gain Intrigue-raising
skills because we can't get a "Cryptography (Proficient)" or the like.
So, looking at the options...
Practical
[*] Intrigue and Tradecraft. (locked in)
[ ] The Use and Creation of Poison
[ ] Spells of Grey Magic
[ ] Swords and Swordplay
[ ] Ritual Magic
[ ] Psychology
Poison does not seem like Mathilde's shtick. Grey Magic could be good, considering Warrior of Fog trait. Swords... are Mathilde's shtick, but she's good at them already and this strikes me as the wrong time to get more.
Ritual Magic is a shiny that we are
never going to have time to put into practice, the way everything is going. Psychology... ? Uncertain.
Theory
[ ] The Nature of Ulgu
[ ] The Nature of Magic
[ ] The Enemies of Man
[ ] The Allies of Man
[ ] Religion and the Empire
[ ] The Empire and its Provinces
[ ] Human Nations of the Old World
[ ] Chaos and Chaos Gods
Nature of Ulgu could be good, similar reasoning to Grey Magic above, guessing it would be halfway between studying Grey Magic proper and studying Enchantment.
Nature of Magic might help understand the mysterious snake juice we are accumulating.
Enemies of Man, meh, we'll deal with them as we come. We know about the Undead now and it's not worth the time to try to guess which will be relevant of orcs, beastmen, norscans, etc. Certainly not going to get them all.
Allies of Man... so Dwarves and Halflings? We could probably make a good showing from hands-on experience if testing, but it doesn't seem that attractive to study unless we really want to go to Zhufbar for an extended period.
Religion and the Empire is tempting, both to understand Ranald better and to learn about all the other alternatives-to-Sigmar that Mathilde might want to suggest to people who don't like Ranald.
Provinces, no, just no. Human Nations likewise. Too dry, does not seem to fit plans for Mathilde at all.
Chaos - Chaos is bad, we are pious and have a protective god, stay away.
Extracurricular
[ ] Enchantment
[ ] Potions and Alchemy
[ ] Power Stones and their Creation
[ ] Runes and Runecraft
[ ] Wyrdstone Containment
[ ] On the Education of Apprentices
Enchantment, of course, would be great to get proper College training in, rather than faffing around experimenting.
Most of the others are basically "time sink we will never get around to".
Wyrdstone Containment sounds like a specialized field for people assigned on cleanup duty, we'll cross that bridge when we come to it.
Education of Apprentices - ehhh...
Pared-down list of my candidate fields:
[] Six months
[] Intrigue and Tradecraft
[] Spells of Grey Magic
[] The Nature of Ulgu
[] The Nature of Magic
[] Religion and the Empire
[] Enchantment
Will see about cutting this further down later, although I don't expect to get to three.