I just realized that if we want to go down the path of theurgy and making Ranald the human god of magic, a fully reclaimed Karak Eight Peaks is probably the best place to conduct the ritual. It has what is going to be the most important holy site of Ranald and the largest stable population ship of Ranald worshipers. We are already in a position to begin to influence them and spread the idea that Ranald is associated with magic. The massive amount of trade that will be coming through soon will allow us to slowly spread the idea to the rest of the Empire. That would help make the ritual possible because Gods in Warhammer are made from the collective unconscious of their worshipers. Karak Eight Peaks is one of the largest concentrations of waystones in the Old world making any potential grand ritual easier to conduct and stabilize it if someone tries to disrupt it. We would assign each of the Karak's peaks a wind of magic for the ritual. Ideally we would create an area in each peak where a single wind gathers strongly as the symbolism is important for such a grand ritual.
Of course the whole plan does have three major problems. The first one being that we would have to convince all eight colleges of magic to help. That would require us to be a least the Matriarch of the Grey College but most likely need us to be the Supreme Matriarch if we wanted to guarantee cooperation. The next major problem is that the second the forces of Chaos gain any knowledge of the ritual they will send everything they have to destroy or corrupt it. The third problem is obviously convincing the dwarves to let a massive magic ritual happen in their newly reclaimed Karak. Thankfully solving that, even if it would cost all of our dwarf favor and then some, would help with the second problem as no one can defend like a dwarf.
Of course the whole plan does have three major problems. The first one being that we would have to convince all eight colleges of magic to help. That would require us to be a least the Matriarch of the Grey College but most likely need us to be the Supreme Matriarch if we wanted to guarantee cooperation. The next major problem is that the second the forces of Chaos gain any knowledge of the ritual they will send everything they have to destroy or corrupt it. The third problem is obviously convincing the dwarves to let a massive magic ritual happen in their newly reclaimed Karak. Thankfully solving that, even if it would cost all of our dwarf favor and then some, would help with the second problem as no one can defend like a dwarf.