Draknir
Fear the Deer
So I have a shaymin obtained through the tweaking glitch, so it's perfectly normal. I traded it from my diamond to my platinum, because on serebii it said that the shaymin obtained from Flower Paradise could be transformed with the Glacidea Flower. When it didn't unlock the flower, my friend let me borrow her event shaymin to unlock it. I tested the flower on her shaymin and it worked. After giving back her shaymin, I tried the flower on mine and it didn't work.
Does the Flower Paradise shaymin have to be from Platinum? I wouldn't have bothered if I had known it wouldn't work on my poor little Lily.
Yes it does. Only the Movie Event Shaymin or its other language equivalents and Platinum caught Shaymin will change into Sky Forme.