
CandyFace
Hi Wakintosh
The magic wand tool doesn't serve a specific purpose per say, though. it is supposed to help you make quick selections. I personally use it in collaboration with the selection tool for also having more control over my selections. if i want to copy something for say animation, then i would probably use the Magic wand tool to select something first, and afterwards use the selection tool to make more precise selections.
I'm not sure i understand what you mean about "copy a square which includes the colour instead of the colour by itself" though.