Sam went into deep thought after thinking this. He has to penetrate the Arsin empire to get into the Usaine sect no matter what.
And it has to be the second major power he has to take down and bring under his control.
If not for the fact, the thunder god temple is the one which is right beside him, he wouldn't have thought so. He would have made the Usiane sect the first target.
Because the resources of the area are far too valuable. Once the war is on a full scale, Sam has to make sure that he has enough consumable weapons like explosives, formation discs, and even weapons. Everything would be in short supply with such a scale of war and the resources like that play an important role in a long-term war.
If that happens, the Usiane sect will have an edge over others. So, he has to find a way to deal with them and bring that territory under their control.