the Sundrop and the moonstone and the Lost Island

In the ancient times, the sun and moon dropped a piece of them on earth. The sundrop grew into a flower, while spikes formed around the moondrop. The sundrop gave the power of healing, and was put in a soup to make a pregnant female heal to give birth to her child. The moondrop gave the power of destruction, which no one has control of. When brought together, they make the holder powerful. What would happened if no one stopped the person holding both drops, and destroy the world?