Dark Scholar's Halo

Equipped Creature gains "Nightfall, You may
reveal the top card of your library and put that
card into your hand. You lose life equal to that
card's converted mana cost. (Nightfall, triggers
the first time a Swamp or mono-Black creature enters
the battlefield under your control.)
Equip {1}
"A little dark knowledge from Noxyz, will still often
tempt a scholar to strive to learn more. They seldom
know the price the must pay."