Inside stands a formidable Flamboyant Gothic pulpit, built for the preacher Geiler von Kaysersberg to match his fulminations against the Protestant Reformation.
The pulpit is too extravagant and was costly to make. 
mnli hypothesis: The pulpit is too extravagant and was costly to make.  premise: Inside stands a formidable Flamboyant Gothic pulpit, built for the preacher Geiler von Kaysersberg to match his fulminations against the Protestant Reformation.