From Stardew Valley Wiki
|Source:||Secret Note #20|
The Special Charm permanently increases daily Luck by 0.025.
It can be obtained after finding and reading Secret Note #20. To solve the puzzle depicted in Secret Note #20, click below.
|Follow the path depicted in the note. Start at the circle in the center of Pelican Town, and follow each directional arrow until your character hits a permanent obstacle. This path will bring you around town, up across the bridge to JojaMart, and ultimately to a truck parked beside JojaMart. Interacting with the truck will allow you to speak to a truck driver who requests a Rabbit's Foot. If you have one in your inventory, you can trade it for the Special Charm.|