What it's good for, Huck?
Good for? It cures warts if you use it right!
How do cure warts with it?
Well. that's easy. You take the potion to the graveyard at midnight. That's when a devil will come, maybe two or three ; they come to get someone wicked who's died. And when they're taking that feller away, you throw the pouch with the potion in it after'em. Then you say. 'Devil follow corpse, potion follow devil, warts follow potion! Ni more warts."