Nulla Corvi

Short version:

Doctors, academics, & shadow magicians - Raven Masks - good reputation
Goals: End the Monarchy -> Meritocracy - become rich
Allied with: John and Francis Baring Company (Barings Bank) - East India Company - losely or informally with many revolutionary and contestatory groups
Leader: Princess Charlotte of Wales / Archmage Corvidae
Modus Operandi: Save life for a life-long tribute (1% of revenues) - Use a Placebo to keep sure that everyone pays (sugar coated pill containing nettle resin + sugar + lemon juice)
Dramatis Personae: Sir Humphry Davy, 1st Baronet (Chemist and arcanist)
Peculiarities: All members wear an hidden magical dreamcatcher made from raven feather
Secret: They know of the activities of the Sons of the Piper but do not act on it -> they prefer to work after the infection, heal, and collect

Long version:

The Princess Charlotte of Wales lives a double life. Publicly, she is the only really loved person from the royal family, since she doesn’t take part in the politics of the empire (at least not openly). Secretly, she leads the Nulla Corvi, an organisation that wants to transform the Empire into a Meritocracy, where (theoretically) only what you achieved determines your worth, not your birth.
Only the highest ranks in the Nulla Corvi know that their leader, the Archmage Corvidae is a woman. Only a handful have seen her without her Raven Mask and recognised as the Princess of Wales.
The Nulla Corvi has revolutionary ambitions. Since their goal is to put Money in the centre of the societal order, they prepare for this. Corvidae is very idealistic in this for a few reasons: she hates the fact that her male relatives exert and abuse power without qualification and thinks that everyone should have the chance to work hard and achieve something, if they are intelligent and cunning enough. The Nulla Corvi wants a soft revolution, with no blood bath, but still publish a lot of pamphlets (in newspapers but also on flyers - they also constrain insolvent ex-patients to make public mouth propaganda for their cause for the relief of one week of payment, to reach the portion of the population that can’t read).
While seeming philanthropic in nature, healing anybody who needs their medical expertise, the small payments they ask are for life and add to a lot in the end. The placebo they distribute is to keep the ex-patients in the belief that they would die, if they stop paying. If someone is not able to make payment, they have to work for it (using their influence, skills or labour for the cause of the Nulla Corvi).
The Nulla Corvi doctors heal everyone, to the best of their knowledge and with the premise of modern medicine, and actually have very good recovery rates. The surely earn more healing the rich, but healing the poor is also a chance to test new remedies. They do not treat wounds, unless it’s an infection.
The doctors always wear the raven masks to stay unrecognised. Every borough has at least one pharmacy where you can contact the Nulla Corvi if you or a relative needs help. They appear before your door and disappear afterwards. This is the place where you have to pay your weekly dues too. If you miss a few payments, be prepared to receive the visit of a few unfriendly and brawny raven-mask wearers that accompany a more sensitive member who can cut a deal for the due money.
A lot of the members of the Nulla Corvi are doctors or doctors in training, pharmacists, alchemist and other learned persons. The money collected is halved between the doctors and the organisation which uses this money to train new doctors, research and develop new remedies and build new arcana for the doctors.
A lot of members from the Nulla Corvi receive training in the arcane arts too. They have found out that they can build an arcanum “in series” and outfit their members with these dreamcatchers. Richard Hodgkin, an anthropologist, doctor, adventurer and arcanist learnt some esoteric secrets and became a medicine man of the Nahanni tribe in British Columbia. Once back in England, he was able to contact the Spirit of the Great Raven and make a pact with him, granting him the possibility to create arcana based on the feathers of common raven, in exchange for blood from the royal Family. Hodgkin and the Princess work together on creating as much dreamcatchers as possible, drawing as much blood from the Princess without danger for her health (which is the reason for her very pale complexion)
Sir Humphry Davy, 1st Baronet leads the “Nulla Corvi Collegium” which is a beacon of modern science and medicine and probably the best medicine school of the world, but is rather unorthodox and secret.

Arcana:

Dreamcatcher of the Great Raven:
Allows the caster to transform into a raven (each use cost 1 PV) until the arcanist wants to reverse to his original form or the raven drops to 0 HP. The caster retains his DEX and WILL in raven form but goes to STR 3 and 1 HP (so 4 Damages kills the caster instantly). All attacks against a arcane raven that is aware of the danger are impaired.
If the arcanist reverts to his human form in-flight (probably not willingly), he suffers D8 damage on landing or D4 if landing softly (hay ball, water, etc.)

Cape of Ravenkind (only 7 existing):
Allows the caster to teleport from one shadow to another one in unaided sight. The caster loses 1D6 Will and a black raven feather drops to the ground in the starting shadow for each lost point.
Gives 1 point of armour

Typical member:

Doctor:
Pest mask - long coat - bag full of medical supplies
WILL 15 - 6HP
Dreamcatcher of the Great Raven
Scalpel

Doctor’s repossession’s helping hand:
Pest mask - Worker clothes showing big muscles
STR 16 - DEX 12 - 6 HP
Leaden Club

Member of the Great Raven Murder (Elite of the group):
Pest mask - Long black feathery coat
DEX 12 - WILL 18 - 6 HP
Dreamcatcher of the Great Raven - Cape of Ravenkind (1 Armour)
Sword and 2 Pistols
Very fancy clothes