" Not all arrows hit their target, and not all bows are designed to make the arrow flew farther, but not all targets can evade, if you do it right... " - Pra'Eimus
If the Misshapen have Arfthar, Bura and Xasmir. Then the human have Suhym, Sufyn and Suhyl, the Dragons of Ashantar...
A powerful wizard that the PCs encounter is completely silent. He does not speak and cannot be heard as he moves. Even his spells are silent, but his magic is just as potent.
He has a tendency to summon invisible chairs, place foes in invisible boxes of force, and other "mime tricks".