Sentence:  They had spent much of June and July walking about the plateau near Poronin and discussing Kuba's <WSD>pyrotechnic</WSD> schemes for making money. Possibly because of his bourgeois origins, Hanecki had a remarkable financial flair, and extraordinary grasp of money matters—a quality as valuable as it was rare in a revolutionary. 
Meaning of the word marked with <WSD> tags:  Resembling fireworks.