You can reshape prions and protein molecules. The WHO is very excited about you, although there are some trust issues....

Light Disbursement where and when you desire.

You can fly. You have an unerring sense of direction and time and weather, but primarily your superpower is that of flight!

you can make anyone feel a sense of clarity in their mind through the power of your staff

Ghost, you make the perfect lifeguard with your power. Or fisher? Or treasure-hunter, possibly...
anyhow.
Your power is that the light refraction from passing through water, no matter is depth/composition/movement, is instantly comprehended and compensated for by you. So unless the water itself is silted up, you can aim right through it and see what is happening with great clarity!

Suddenly you can read and write Chinese Calligraphy...
Your amazed and wonder what has happened, and pondering what other sudden powers you may have.

Well, you're a fairy, so you have all the powers normal for that race.

Your personal superpower, though, is that whenever someone flips a coin, you always know what side it is going to land on, before it lands.

you always know when it's someone's birthday

When you hold something, you can preserve it at the temperature it was at... so ice cream never melts unless you want it to, and hot cocoa never gets too cold.

When the clock strikes Midnight, for one hour, you can write a #1 Best Selling Book.
Your powers only allow you to complete one book a year.