Summoner Belinda:
First, you must speak with Messenger Wahkan of the Ketra Orcs. They're hiring mercenaries, and this is a great opportunity to earn their trust!
Soul Guide Asefa, the Chief Shaman of the Ketra Orcs, has something they call the Divine Stone of Wisdom.
We must get it from them! If things don't go well with Asefa, try the Varka Silenos tribe. They have one too.
Good luck!