Evasion
Perhaps it was because the Incandescent Stager had showed up and effectively posed as a threat for all the Factions, which caused the majority of the voyaging combatants to not notice the sudden disappearance of the raging blows far away.
No.
Maybe, the old undead man had caused the racket with the storm he prompted with his unknown Form Using technique so that he could provide an impeccable cover for his master right when he needed it; at the end of his battle.
That could be it.
All the undead did the masked man's bidding, right, regardless of which type they were?
In any case, Replicus had not noticed until everything calmed down.
He had been busy with the Incandescent Stage expert's assault just now, but Eaniss, and probably a few other Incandescent Stage Faction leaders had probably noticed as soon as the terrible battle concluded.
That was probably why the Head Faction leader had cleared the view.