Viticulture
Can you play Influencer when all six of your stars are already on the map?
The designer confirmed the star placement is mandatory; that you cannot play the card without a star is an inference.
- jameystegmaier · Designer · 2018-10-08
Probably not. The designer says you must place 1 star when you play Influencer, so with none left to place the card appears unplayable.