At this point, all of the entities present started charging at the group. It's as if they were specifically tasked with overpowering the group the moment their third-party member arrived.
Well, that was their basic function since it gave Bruce and Lucy a small window of a breather before the real trial began. There was no way Magnus would indifferently challenge them without having complete control over the variables.
While the entities were there to give the Disciples a hard time, they won't necessarily kill a Disciple. They were just projections of Magnus, nothing more nothing less.
Nonetheless, they were physical projections, not just illusions, so their attacks, if they were to connect, could actually hurt a Disciple. Magnus assured them that none of the Disciples were going to die, but he didn't assure their complete safety.
Another summon joins the family ahahah