Yoshi sighs heavily for having to get involved, casts Wieldskill on himself, prays for the collective wisdom of his ancestors, and shuffles up to the orc. “Calm yourself. No one here will harm you. You are in the presence of clergy of the Old Orc, QuanYin and Smofarf. We are curious as to why you were following us. Clearly you must have good reason to put yourself in such a precarious position on the roof. Perhaps we can answer any questions you may have for us directly? What is it you wish to know about us?”
Diplomacy check = d20+15 = 29.