Serket. The staff she holds in her right hand is a symbol of power. In her left hand, she holds an Ankh, the Egyptian symbol for life.
Serket was an ancient Egyptian goddess. She was shown as a scorpion. She would sting "bad" people, but she could also cure scorpion stings and other poisons, such as snake bites. Because Serket could cure snake bites, she was sometimes known as the protector from Apep, the evil snake-god.
She was shown in art as a scorpion or as a woman with a scorpion on her head. Serket did not have any temples, but she had many priests.