Paval picks up a small stone, and marks it. "I will cast Silence upon this stone," he says, addressing Korach, "that way, when you can control the silence to a degree. Obviously, it'll be the last spell I cast before you go in.
"I can also ask Kiaransalee to place a shield of faith around those of you in the first wave. This will protect you somewhat, and do bear in mind that we all are invisible to undead at the moment."