High ranking vampires were not supposed to use their powers. It was a law established years ago to avoid the bug scale bloodbaths in BloodBound. The use of powers was only allowed in situations of grave danger and after it was allowed by the royal family. Of course the princes had to obey too, they could not escape the law nor its punishments. Whoever broke the law about powers was to be whipped one hundred times with a holy water dipped whip. No one wanted that. Definitely not Xan.
But as the crown prince heard his brother scream at him, seeing the desperation in his eyes he was aware that there would be no other way to stop this. Yes, no one had come by now but they couldn't be sure about what was going to happen next. Mikain was a nuisance already, he wouldn't want to meet his Beta or any other powerful werewolves tonight.