Granted, but you become the villian of the fantasy world.

I wish I can fly

Granted but you would never be able to walk again

I wish I can eat as much as I want but never get fat

Granted, but you get so full that you can’t eat again.

I wish I was a bird.

Granted but you get eaten by a bigger bird. @Aurora Griffith I want to marry a computer so can be Plankton, duh!

I wish I could.... Win the entire game!

Granted but your computer will crash

I wish I could read every book in the whole world.

Granted, but you forget about it after a minute.
I wish I can read other people's minds.

Granted, but you will only see the bad bits

I wish I could draw better.

Granted, but only when you are drowning in the sea.

I wish I was pretty.

Granted, but nobody recognizes your beauty.
I wish I have more holidays.

Granted, but it's useless because they last only one hour but you get one everyday!

I wish I was the best auror ever!