Tomb Overseer

Defender
{b}{b}:{t}, Exile target creature from an opponents graveyard, then create a 1/1 black spirit token
with flying. Tomb Overseer gets +0/+1 for each creature exiled this way
{4}{b}: Sacrifice five spirit creatures, Tomb
Overseer loses defender, gains trample and deals
damage equal to it's toughness until end of turn.