Protector Of The King Fire and Witches

Witches come in all shapes and sizes. But here, we define them as color. White witches, or most known as Silver witches, heal and are not so dangerous. If they can prove their loyalty to the King, we keep them alive. If not, then we burn them at the stake. Now, the most dangerous type, Black witches, kill and harm. We kill them immediately. But there is one more type of witch. One that hasn't been seen is over 1,000 years; The Silver Black Witch.