AI to AI diplomacy is fundamentally different from how the AI interacts with the human player. In general, when two AI players interact, only one will make the decisions, for example if they want a Wizard's Pact, the other wizard's opinion on the matter is ignored, and the pact is formed immediately. The other wizard might break it afterwards, but they can't prevent the forming of it. At end of every turn, the following process is executed : - First of all, check if the wizard has been banished. If yes, end the process immediately.