I have a druid in my game with the “Elemental Mastery” move but I’m starting to draw blanks on what to demand when…

I have a druid in my game with the “Elemental Mastery” move but I’m starting to draw blanks on what to demand when…

I have a druid in my game with the “Elemental Mastery” move but I’m starting to draw blanks on what to demand when he chooses not to “avoid paying nature’s price.”  Any suggestions?