Wretched Ghoulcaller

When Wretched Ghoulcaller enters the battlefield, you may return target creature card
with converted mana cost 3 or less from your graveyard to the battlefield tapped.
{b}{b}, Sacrifice another creature: Create a 2/2
black Zombie creature token.
In the darkest hours, the Ghoulcaller's twisted chants
awaken the dead, their loyalty bound to her foul
bidding.