Ulrik, Heir of the Underworld

Menace, Deathtouch, Protection from white.
Flip a Coin: If you win, a random opponent sacrifices a creature at random. If you lose the flip sacrifice a creature at random. Create treasure tokens equal to the mana value of the sacrificed creature. Activate only as a sorcery and once per turn.
Pay 10 life; Sacrifice 10 treasure tokens: exile the top ten cards of youre libary. You may play cards without paying their mana cost, with total mana value 10 or less