The official website for The Settlers of Catan

Question about Politics & Intrigue Archdiocese - Can I play the Arsonist to burn down my game partner’s Archdiocese if a Witch or Pawnbroker is placed on it?

Answer

No.

Note: Witches and Pawnbroker belong to the theme sets "Wizards & Dragons" and "Trade & Change, which are part of the Catan Card Game – Expansion Set.