Tome of Dark Secrets

When a player casts a black spell, gain 1 life.
When a player casts a spell from anywhere other than their hand or activates an ability of a card in their hand or graveyard, each player puts the top two cards of their library into their graveyard.
Bound in the skins of thirteen tortured innocents, the tome reeks of pure evil. With each turn of the page it stains the soul of any who read it's forbidden text.