Granted but someone copies exactly what you wrote.

i wish i could eat as much as much ice cream as i wanted

Granted, but you get awfully sick.

I wish I was in good shape

Granted, but then you get into bad shape after a week of good shape.

I wish I could go swimming

Granted, but you'll drown
I'm so evil

I wish I was lucky

Granted, but you are lucky because you steal everyone's luck, causing disasters and sorrow ALL OVER the world, forever. I think I got a little carried away

I wish I could be a shark.

Granted but you are sold by shark catchers to See World.

I wish I could travel the world for no costs

Granted but you then meet a salesman and they make you pay £1000/$1000

I wish I could be a gymnast.

Granted but you're a bad one.

I wish I could breath underwater.

Granted but... Only for one day!
I wish I could... Be the best witch ever!

Granted but all witches are bad so you're only the best out of a lot of bad witches.

I wish I would never be tired.