Anyang, Posthumous Healer

Anyang, Posthumous Healer enters the
battlefield tapped with five slumber counters on
it. As long as Anyang has a slumber counter on it,
it can't attack or block. During your upkeep, you
may remove a slumber counter from Anyang.
Once Anyang has zero slumber counters, exile it
and return all creature cards from your graveyard
to the battlefield.
"Is he dead? Because I can only heal him if he's dead."