Current questions and answers regarding the map editor.

Yes, I managed to get the reward troops for completing the prophet's quest, but is it possible to change it so that the prophet asks for an artillery unit instead of a unit of archers, and gives an artillery unit as a reward?
Also, if the prophet's quest works, I want to know how to make neutral units join my army with a 100% chance, even if my army is small, since I need to bring troops to the prophet, and they are all hostile, so no one wants to join my army. How can I make it so that a neutral unit joins with a 100% chance, so that I can complete the prophet's quest?
Thank you in advance for your answer!