Taysir, the Necromancer

Deathtouch, Protection from Green
Whenever another Human dies, you may exile it. If you do, gain 2 life and put a 2/2 Black Zombie creature token into play tapped.
{x}{b}, {t}: Put the top X cards of your library into your graveyard, then you may return a creature with cost X or less from your graveyard to play. If you do, you lose X life.