" 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...
At regular intervals, a god takes control of your world's weather. Choose the gods at random each turn of the interval and begin applying their effects subtly. Their power will depend on the strength of those who worship them.
For civilised people, worship of a god actually wanes during that god's month in an effort to reduce their potential destructive effect.