One way to get some Sylkis Greens to feed Piko in Final Fantasy 7 Rebirth is to complete the Conniving Caglio’s Swindling Seminar. Available starting in Chapter 8 when Cloud is unceremoniously incarcerated in the Dustbowl, this quest involves speaking to Caglio’s pupils to determine which of them is telling the truth. Cloud Speaking To Sloppy Shawn For Swindling Seminar In Chapter 8 Of Final Fantasy 7 Rebirth