Nukarvu, Nexus of Madness

{t}: Add {u}{b}, {u}{r}, or {b}{r} to your mana pool. Target opponent draws a card and loses a life.
{u}{b}{r}, {t}: Draw two cards and lose a life. Activate this ability only any time you could cast a sorcery.
"Through a spiral of insanity comes true power." - Nekusar, the Mindrazer