Can you use fusion on a being the is already on the effect of fusion? I don't think so which is why the plan only involves two beings at the time.
Component 1, Wyrm of War Vecna Blooded Spire Dragon.Feat dependent abilities will be placed here if possible to take advantage of the higher HD cap.
Component 2, the Diety, Focus: Epic Powers,Focus:Epic spells, Locating Dispater.
Is the 22+DvR a typo for the point buy of greater deities? It went 160, 180, 200, then 22. So I think a 0 was left off.