Powerful Potion

Decades ago, a magician had created a magical potion that would be the most powerful in the world. He had added one characteristic that would save it from getting into the wrong hands. One day, and exile witch, Mela, came and asked for the potion. He told her that he isn’t giving it, and that it was right in front of her. Mela looked to see a substance, it looked just like water. Mela grew angry and banished the magician from sight. It turns out that Merlin was right, the most powerful position ever was right in front of Mela.