Wish is the mightiest spell a mortal creature can cast. By simply speaking aloud, you can alter the very foundations of reality in accord with your desires.

Literally anything is possible with the wish spell.

If you ask a celestial for a wish, there is a 5% chance it will fail and go against your wishes.

If you ask a djinn for a wish, there is a 15% chance it will fail, and go against your wishes.

If you ask a devil/fiend for a wish, there is a 33% chance that it will fail, and a 17% chance that it will actually do the exact opposite of what you want.