"The sniper must remain hidden for now and cannot be deployed; if there are really too many, then let the Beastmen take action." Anyway, the favor from the Beastmen has to be requested sooner or later, so might as well have them move.
The sniper must stay hidden for now, as this is a trump card in defending our own territory.
It's a move specifically designed against Undead Mages, to be revealed only when they show up.
If it's exposed too early and those Undead Mages are prepared, then the sniper will not be very effective.
An Undead Mage who is prepared has many hidden tricks; that could cause a lot of trouble for our lands. But once this wave is over, and our territorial development gets on the right track, the next time it will be easier.
"Okay, I understand. It's just that things with the Beastmen are a bit..." Xi Fei hesitated to continue.
"What's the matter, is there trouble with the Beastmen?" Zhao Guang asked in surprise.