Starf Berry
From Fanonpedia
The Starf Berry is a rare Berry that's considered a myth, said to have extremely strong power. It was said to be so strong that it had to be abandoned at the world's edge, and is considered a mirage. Its delicious flavour is otherworldly, and it sharply boosts a random stat when eaten. It is often given as a reward to those who perform extremely well in battling competitions.
