Yosef, Force Of Nature

Sacrifice a zombie, return Yosef, Force Of Nature to the battlefield untapped
{3}{b/g}{t} Put an x/x black green fungus zombie token onto the battlefield, x is equal to the number of creatures in your graveyard
{2}{b}{g}{b/g} As an additional cost to use this ability sacrifice a creature, all opponents take damage equal to the power of that creature