Vael'Kriz, Black Sun

As long as your devotion is black is greater than 10 this spell cannot be countered.
Shroud.
Spells you cast named Torment of Hailfire and Exsanguinate cost {b}{b} less to pay and may be cast at instant speed.
At the beginning of your upkeep you may search your library for an Instant, Sorcery or Legendary Permanent and put it into your hand. Shuffle your library. If your devotion is greater than 15 you may instead search for and reveal two additional cards.