Magic Eraser

The Magic Eraser is a spell which erases the magic inside a person. This spell is very powerful and hard to do. The silhouette of a person as the form of their magic in a color depending on their specialty (white if not discovered) will escape as the magical part of a person. You can do anything to the magical silhouette.

Instances
The Fairy Godmother once used this spell to kill the magic of Lloyd Bailey. Also, Marcos' magic was drained after electrocution moments before his death.

Serena also did this to herself for 24 hours, and to not lose it, she kept her magic safe inside a special chamber.

There is a unique color to each specialty.

Antidotes
The primary antidote is the Bisector Spell, the way this spell works is that the fairy/witch/warlock commiting this spell would free his/her magic from the captive chamber and then walk into it, then he/she will erupt into a form of her specialty (eg. Xanthous would burn himself in flames and Emerelda will turn into a jewel and then melt down her jewel layer.

If you lose your magical silhouette, a fairy/witch/warlock can reincarnate it by drinking a potion.

Also, blood transplants also work but this is not recommended, an alternate way to that is to eat grilled spiders and cockroach soup, it won't give you the answer but it would be better and less risky than blood transplants.

Colors by specialty

 * Fire - Orange
 * Jewelry - Diamond blue
 * Water - Blue
 * Compassion - Rainbow
 * Intelligence - Purple
 * Trouble - Red
 * Electrical currents - Yellow
 * Weather - Snow white
 * Thunder strikes - Silver
 * Plants - Leaf green
 * Flight - Gold
 * Cruelty - Black
 * Culinary - Brown
 * Insect manipulation - Pink