Coffin of Urnaav

{t}: Exile target card from a graveyard. Put a storage counter on Coffin of Urnaav.
{2},{t}: Create a 1/1 black Bat creature token with flying. Put a storage counter on Coffin of Urnaav.
{t}, Remove six charge counters, Sacrifice Coffin
of Urnaav: Create a 6/6 black Vampire creature token with flying.