You start shrinking as your ears start getting pointy. Your body starts getting scrawny. And finally you pass out.
You wake up next to what looks like a huge lake. But then you see a bear and realize you've shrunk. You've become the size of a finger!
Then a barefoot woman in a green dress shows up. "Aw you look so cute in your new form!" She said. "Who are you?" You say in your elfish new voice. "what happened to me?" "Ugh. Humans. So dumb. I turned you into an elf with those mushrooms. As for my identity, call me, Mother Nature." "Wh'd you do this to me" You squeaked. "Bored. Being the spirit of nature can get dull. Sometimes you need to have a little fun." She said as she picked you up in her hands and started petting you. "You'll make a perfect little elf. He he."