Great Cthulhu

When Great Cthulhu enters the battlefield put
X 1/1"Star Spawn" where X is the amount of cultists or humans in any graveyard.
{x}{p/b} Great Cthulhu adds
+1/+1 to all Star Spawn on the battlefield.
{t} (Exile) Great Cthulhu sleeps in R'lyeh -
bring Great Cthulhu back to the battlefield,
without paying his mana cost by sacrificing any
creatures with converted mana of
3 or more.