When Zabia and Dyon stepped out, the rest of the plan proceeded smoothly.
Half of the Uidah army was sent to a specially chosen gate. As for how they'd leave without the Uidah noticing the influx of numbers? Of course, Dyon had already taken this into account.
For one, their numbers would be almost immediately halved, unbeknownst to them. According to the rules of the key, Dyon could teleport any number of people to any gate in this quadrant. However, there was a caveat he had specially taken note of. With the exception of this universe, he could only teleport to the very center of any other gate.
What did this mean? Every gate had the same characteristic regardless of whatever variety of dangers they provided: The center would always and unequivocally be the most dangerous area.
To teleport nearly half a million warriors directly into a disaster? The results could be guessed.