White magic is more healing and light magic. Black is elemental magic.

...It was the closest to what my family has back home, though for some reason the doll was the only thing I could channel magic through.

[He says as said doll sways its little lantern a little.]

At least this little guy's been the source of a few good pranks. Once convinced some guy that it was haunted after he waved a leaf of lettuce in front of my face.