Answer:
Always wax, yet always wane: I melt, succumbed to the flame. Lighting darkness, with fate unblest, I soon devolve to shapeless mess.
What goes in the water red, and comes out black?
What contains zero calories, but if you consume it, you will probably gain weight?
A leathery snake, with a stinging bite. I'll stay coiled up, unless I must fight.
The one who makes it, sells it. The one who buys it, never uses it. The one that uses it never knows that heβs using it.
I can only be played on a windy day