He hadn't used his subordinate gods to hunt all along so they could grow in safety. Other god kings were always using their subordinates to fight, but he didn't. Now it is time for them to pay their dues.
The meeting was adjourned after that. He left Gemmis to continue hunting while he instructed Warshaw and the other two Oracles to begin their assault.
His hunt is to acquire some divinity, and if he gets lucky, stumble into a true god that just came into possession of a domain. Actually, he will fight and kill any god he encounters. Even Pantheons are not safe from him.
The advantage of numbers that Pantheons offer used to mean safety in numbers, but not to a Domain god who is willing to spend the divine energy needed to use a Domain.
In fact, most domain gods go after pantheons immediately they see them. After all, a pantheon represents a large amount of divinity.