Summoning a Warp Spawn

The traitor Voigtvir is conducting a Chaos ritual on the bridge of the starting ship when the player party finally fights their way to him: sacrificing crewmen to the Ruinous Powers. Edelthrad attempts to stop him, but Voigtvir kills the third crewman and flees, while the hapless psyker is transformed into a Warp spawn.

Example of:
Human Sacrifice