latiosandlatias

Very easy. In donut land go to the part which is a cave. I don't remember the name but in that part after a while a dotted green box will appear. From 1 of the next 2 pipes you can go up and like this yo'll come to a new place. There will be a chargin chuck. Proceed and there will be a blue shell. Pick it up shoot to the last of the box in the air. Then a beanstalk will appear and now climb and insert the key in the keyhole.