Avahz Darkwood
Emperor
I would agree about the world spell here. If not then mayhaps a new land type and/or bonus that only the Khazad can use and trade simular to the Lunan Pearls (someone mentioned shrooms already). The peaks would turn into a new kind of mountain (cavernouse Peaks) that grant a bonus such as shrooms and use up all motion points no matter how many one has.
I still say that the Khazad World Spell should improve Peaks.