Magnus Arcanum

Magnus Arcanum
also known as the Arcanum
Kind	Arcane institution
Seat	Empire-wide, with towers in Moonward and Iceverf
Status	Intact in the Aenarch: Last Winter timeline
GM canon
first cited: [heralds-a#3]

Magnus Arcanum is the arcane institution of the Aenarch Empire, the organization of magic and mind-magic that governs spellcasting, magical law and the licensing of mages across the realm. ^{[heralds-a#50 · heralds-a#125]}

Overview

The order is built around Seven Great Houses devoted to arcane and mind magic, of which House Rosamendus and House Rosemint are two. ^{[heralds-a#124 · heralds-a#127]} House Rosamendus in particular leads the mind-magic tradition, and the family stationed a relative of its bloodline in the lands around County of Rosereach. ^{[heralds-a#122 · heralds-a#124]} Beyond spellcasting itself, Magnus Arcanum runs the empire's magical bureaucracy: its buildings offer everything from spellcasting services to magical legal matters, and its towers hold ledgers, regulate practice and store relics. ^{[heralds-b#164 · last-winter#173 · last-winter#628]} In Iceverf, its local seat is the Magnus Arcanum Building, which provides magical services and administers magical bureaucracy for the city. ^{[last-winter#173 · last-winter#174]} In Moonward, it maintains a tower handling magical bureaucracy, regulation and the storage of powerful relics. ^{[last-winter#628 · last-winter#634]}

Authority and reach

As an empire-wide arcane authority, Magnus Arcanum can appoint war-time officials with wide-ranging power: it dispatched Naevys Duskbloom to Rosereach with wartime authority. ^{[heralds-a#50]} It has likewise sent an Archmage to aid a regency's war effort and study battlefield magic and anomalies. ^{[last-winter#753]} The High Mage who currently directs magical operations on the Eastern Front also comes from Magnus Arcanum's ranks. ^{[last-winter#792 · last-winter#793]} Its governing body appointed Elara Candleworth as the Magus of Iceverf, its senior representative for magical affairs in that city. ^{[heralds-b#192 · last-winter#175]} It is also the magical authority formally notified about the Kelruun omen and its crossing between realms, though its briefing on the matter is incomplete. ^{[heralds-b#446 · heralds-b#447]}

Status across timelines

Needs a decision: Magnus Arcanum's condition differs sharply between records of the same conversation: is the institution's fracturing a fact of the present Heralds of the Cycle era, or was that framing itself a mistake later corrected by the campaign owner?^{[heralds-b#197 · heralds-b#204]}

In the timeline of Aenarch: Last Winter, the campaign owner explicitly affirmed that Magnus Arcanum has not collapsed: it remains whole, powerful and deeply woven into the Empire's governance, and any collapse belongs only to later or separate projects such as Winds of the Stormgate. ^{[heralds-b#204 · heralds-b#219]}

Elsewhere in the record, the order is instead described as having fractured after the massacre of its High Council, with surviving Arcanists becoming isolated power-centers who each put their own tower and apprentices first.

Players, stop here. What is hidden behind this point is game-master material. The full detail is on GM:Magnus Arcanum.

Magnus Arcanum and Blackice

Magnus Arcanum is aware that Blackice exists, but it does not grasp the secret society's true depth and underestimates Godwin White. ^{[heralds-b#397]}

Its exact dealings with Blackice in Graymond go further than that.

Players, stop here. What is hidden behind this point is game-master material. The full detail is on GM:Magnus Arcanum.

Separately, the order's local tower — sometimes called the Mage Tower — joined Faith in the raid on Black Ice, examining the evidence there for magical traces. ^{[heralds-b#439 · heralds-b#444]}

In play

Naevys Duskbloom, holding the Arcanum Tower of Deadreach, is Magnus Arcanum's most consequential presence in the current chronicle; her standing with the order's leadership is delicate.

Players, stop here. What is hidden behind this point is game-master material. The full detail is on GM:Magnus Arcanum.

Related pages

• Naevys Duskbloom — Arcanum envoy sent to Rosereach, now holding the tower over Deadreach
• Elara Candleworth — appointed Magus of Iceverf by the order's governing body
• Aenarch Empire — the empire Magnus Arcanum serves as its arcane institution
• Blackice — the shadow society the order underestimates and has been quietly used by
• Deadreach — site of the order's fallen tower and its scattered Arcanists
• House Rosamendus — one of the Seven Great Houses, leading the mind-magic tradition
• Iceverf — hosts a Magnus Arcanum building and the seat of its appointed Magus
• Moonward — hosts a Magnus Arcanum tower for bureaucracy, regulation and relics

Unconfirmed ideas

The source conversations contain proposals for Magnus Arcanum that the campaign owner never confirmed. They are collected on Idea:Magnus Arcanum so they cannot be mistaken for canon.