Stahl aids Magnus at Vandrax, defeated by Crusade

Having a Daemon Primarch active in the Aleph Sector was a matter of consternation for Warsmith Lycurgus Stahl as, along with the Cicatrix Maledictum, they put his position as the Master of Chaos forces in the Aleph sector in serious jeopardy. Matters were only compounded when Magnus sent emissaries to Minos to demand Stahl render aid to Vandrax over furthering his conquest of Tarlius.

Stahl could not afford a war with Thousand Sons, and so agreed to send a force. However Stahl had no intention of simply rolling over for the Cyclops. Under the command of Rybax, a Lord out of Stahl's favour, the Iron Warriors made landfall in the Vandrax system on 04.011.017M42. Within hours the Iron Warriors found themselves ambushed by the Cerberex Guard supported by Valkyries and the Tempestus Scions. Nearly half the Iron Warriors force was cut down before they could even respond, and when they did their heavy weapons were malfunctioning or sabotaged; Lascannons barely scratching the Guard vehicles. Rybax and Slavemaster Cerika attempted to break through the ambush, slaughtering their way through the Tempestus Scions Company and Imperial Guard infantry platoon, only for Rybax to be caught in the crossfire of the Imperial armoured spearhead and obliterated. The raid was a complete failure, Magnus would have to face the Imperium alone at Vandrax.