Picking up the object, you see that it's some sort of golden crown with emeralds set into it. You feel compelled to put it on your head, and when you do, a strange shimmering sensation overpowers you and you black out.
When you come round, you find yourself cold and clammy, still in the shipwreck. Looking down on yourself, you are shocked to discover that your skin is green. The flippers on your feet have merged with them giving you huge webbed feet. Your hands are the same, but smaller. Catching sight of your reflection in a mirror, you gasp in horror - you've become a giant frog!