Zaol'tey, Hell Serial Killer

Protection from white, blue, and green.
Demonic Bloodlust - Players may only cast spells when
they could cast a sorcery.
{t}: Pay 1 life. Search your library for a card and put it
into your hand. Then shuffle your library.
{1}{b}{r}, {t}: Destroy target creature with total mana
value {6} or less. You gain life equal to the total mana
value of the destroyed creature.