Deathrite Ritualist

{t}: Target creature gains Deathtouch until end of turn.
{b/g}, {t}: Exile target land card from a graveyard. Add {b}{g} to your mana pool.
{3}{b/g}, {t}: Exile target creature card from a graveyard. If a card was exiled in this way, create a black 2/2 Zombie creature token, then put a +1/+1 counter on each Zombie you control.