Where is the person you need to go to get the supplies for the leprahchun on Flower isle for Horseisle?

To get the supplies for the leprechaun on Flower Isle in Horse Isle, you need to visit the shop located on the same island. Look for the shopkeeper who sells various items, including the specific supplies needed for the leprechaun quest. Be sure to check your inventory and gather any required items before heading to the shop.