Intriguing Letter

{t}: Add one mana of any color.
{2}, Sacrifice Intriguing Letter: Draw a card.
You think to yourself: "Weird to recieve a letter this
late at night." As you start reading it, you begin
wondering who would send such a strange letter.
When you reach the end, the letter neglects to leave a
name. Frustrated, you spend the rest of your night deciphering the words.