This skull can be used once each day, and gives you a fortune such as the following:
"It's not winning that matters, but winning in style."
"Today's your lucky day. Probably."
"Do not meddle in the affairs of dragons, for you are crunchy and taste good with ketchup."
"That is one stupid question."
"You'll need more rum for that."
"Do or do not. There is no try."
"You should do something you always wanted to."
"If you walk under a ladder and it falls down on you it probably means bad luck."
"Never say 'oops'. Always say 'Ah, interesting!'"
"Five steps east, fourteen steps south, two steps north and seventeen steps west!"
Several of these are popular phrases borrowed from elsewhere, such as the dragon line, which spoofs Tolkien's "Do not meddle in the affairs of wizards, for they are subtle and quick to anger."
<spoiler>Achievement Superstitious
Obtainable by using 100 Mysterious Voodoo Skull (message "It's not time yet." doesn't count).</spoiler>