Cultist of Deadly Sin

You can have any number of Cultist of Deadly Sin in your Library

{b}{b}{t}, Sacrifice Cultist of Deadly Sin: Reveal cards from the top of your library until you reveal a Deadly Sin card. Put that card into your hand. Shuffle the remaining revealed cards into your library.

{t}, Sacrifice Cultist of Deadly Sin to add mana of any color to your mana pool. This mana can only be used for a Deadly Sin card