Tried and true spells?!?

Does anyone have a spell that they have tried and it works? A lot of these spells are fake, and I'm looking for a transformation or shape shifting spell. Thank you so much!

I am sorry, but you cannot shapeshift or transform into anything. You can use a glamour which manipulates people's minds to make them see you as something -though that could only work on some people, not all.

This is not possible with magic you cannot change your DNA