Primarch · Legion XV · traitor

Magnus the Red

Magnus the Red, “the Crimson King”, primarch of the Thousand Sons and the mightiest psyker among the primarchs, is a traitor in spite of himself. His failed psychic warning breached the Palace’s shields and ruined the Webway project, giving the pretext to burn Prospero. At the Siege he hurled a psychic blow at the Webway beneath the Palace. He survived the Heresy and became a daemon prince of Tzeentch.

Role: Primarch
Legion: XV Thousand Sons
Side: Traitor
Key events: 3 events

Fate

Survived the Heresy and ascended to become a daemon prince of Tzeentch. Continues the eternal feud with the Space Wolves.

Key events

Council of Nikaea 001.M31 · Inconclusive
Burning of Prospero 004.M31 · Pyrrhic loyalist victory
The Siege of Terra 014.M31 · Pyrrhic loyalist victory

Part in other events

Compliance of Aghoru and the Ark Reach Cluster 000.M31 · Loyalist victory
Magnus’ Folly: the Webway Breach 004.M31 · Atrocity
Writ of Censure against the Thousand Sons 004.M31 · Inconclusive
Magnus Defeated in the Webway 014.M31 · Loyalist victory
Last Stand at the Eternity Gate 014.M31 · Pyrrhic loyalist victory
First Battle of Garm 016.M31 · Loyalist victory

Relations

Leman Russ — Magnus the Redduel
The Executioner and the Sorcerer. Nikaea set them against each other ideologically; Horus’s decree substituted “destroy” for “bring Magnus in”. On Prospero Russ breaks Magnus in single combat, and the Thousand Sons perish as a civilisation, not as an army.
Event: Burning of Prospero · 004.M31 · Pyrrhic loyalist victory
Constantin Valdor — Magnus the Redrivalry
The Guardian of the Throne and the Breach. Valdor accompanies the censure of Prospero and then the whole War Within the Webway, clearing up what Magnus broke through in the cellars of the Palace. This is not a fraternal feud but a conflict between two instruments of the Emperor: the perfect guardian and the perfect sorcerer.
Event: War Within the Webway · 005.M31 · Inconclusive
Magnus the Red — The Emperor of Mankindbetrayal
The Forbidden Son. Magnus defies Nikaea in order to warn the Father about Horus, and in doing so wrecks the webway. The Emperor sees not salvation but catastrophe. After that come the Burning of Prospero, the flight to Tzeentch and Magnus’s late arrival, now as an enemy, at the walls of Terra.
Event: Magnus’ Folly: the Webway Breach · 004.M31 · Atrocity

Sources

WH40k Fandom: Magnus the Red
Lexicanum: Burning of Prospero

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