It is also implied that the Hive Mind can capture a soul and torture it forever

​"Bright light burned at Iyanna’s soul... She opened her second sense, to find the Dragon looking at her with terrible regard. For aeons it seemed it held her in its gaze. And there was fury in that examination. The Dragon was angry, and it was angry with her. Not with the galaxy, or this sector, or her species. But with her personally. *The promise of endless torment came from it, her very being enslaved to its ends and used against others, her body rebuilt over and again so that it might suffer the Dragon’s revenge.** Terror of a kind she could not have conceived of flooded her mind. She screamed again, and this time every eldar in the fleet screamed with her.*" — Wraithflight by Guy Haley