A Bottle of Potion!

Godessa Gosh: (c)(c)(c) I'm- "Godessa Gosh," enchanted. In my hand, I hold- a potion sold, "as good as gold." Once drunken, it turns, "How you've been?"- into what you become, I hum ... Athirst, I drunk- and then thunk, "What am I?" "I'm a witch"- with gentle pitch. I can conjure- almost any cure... As my heart lingers, I can snap my fingers- and can procure- an elixir...