You like Shadow Priest but don't want to be a Pirate?

Do you think there is Light in the Shadow?

Here's the deck for you. 

This Shadow Priest is more like a Tempo/Burn deck, that can generate huge burst turns with Palm Reading setup and/or Radiant Elemental, the namesake of the deck.

Against slower decks you should try to conquer the board and chip away some damage from there first, against other Aggro decks you might need the help of Shadowcloth Needle.

If board-based Aggro becomes popular, swap Shadow Visions for Potion of Madness.