Simple
Sylas suddenly remembered something. When he first entered, it said the entry limit was three. He had thought that maybe after he entered, the entrance would close anyway. The other requirements were just suggestions, so he thought that the entrance would disappear after he entered.
It seemed that he had made the incorrect assumption.
'Two people entered after me.'
Sylas' gaze narrowed.
Several questions popped up in his head, but the main of them was: if he killed them, would the entry limit open up again for more people to enter? That might be more trouble than it was worth.
But the minions here were also very valuable to him.
'Even if it allows more in, the odds that there's another group ready to enter nearby is slim… unless they came in a larger group than just a pair, in which case, their other partners might be waiting and notice that the entry limit increased once again.'