In other words, it's akin to committing murder by borrowing another's hand.
Given the current situation, it's highly unlikely that the Slane Theocracy would reveal any hidden trump cards before a crisis arises.
If that's the case, why not force the Slane Theocracy into a crisis?
However, the Nasalik Underground Tomb doesn't want to expose the trump cards of the Slane Theocracy, causing losses. Therefore, the entity to block the trump cards of the Slane Theocracy and test the hidden methods of the enemy would have to be selected from elsewhere.
The Kingdom was the first target chosen by Nasalik.
That's why Albedo and Demiurge proposed to Ainz to direct the conflict towards the Kingdom and let the Kingdom probe the Theocracy's methods.
In other words, their goal was to completely sever the relationship between the Kingdom and the Theocracy and instigate a war between the two nations.
