Stop trying to scare the children!
Now does anyone else have a spell the won't draw attention?
Ulthok has Stone to Mud and could drop the Orc's feet out from under it. Then stop the spell and trap it in the rock.
But it would have to wait a round, he is casting Confusion on the Orcs by the doors in the first round.
Peri could cast confusion on the big Orc holding the Paladin or Tasha's Uncontrollable Hideous Laughter, but that take a couple of rounds to work completely.