Biel-Tan

Biel-Tan is the Swordwind craftworld, whose inhabitants are militant restorers of the old Aeldari empire. A craftworld is a world-ship, and Biel-Tan’s forces purge Maiden Worlds of settlers.

A daemonic invasion and the ritual performed by Yvraine to birth Yncarne shattered Biel-Tan’s infinity circuit. The population fell by half, and the world-ship was left drifting as a broken fleet.

The surviving Swordwind continue to travel the webway in order to kill usurpers. Biel-Tan therefore remains an active militant power among the Aeldari, though in a diminished and fragmented condition.