Great Cthulhu

If Great Cthulhu did not enter the battlefield
from your graveyard while you had six cards in
hand, return it to the graveyard and end your turn.
Flying, Hexproof, Indestructible, Islandwalk
All other creatures have -3/-1.
Ph'nglui mglw'nafh Cthulhu R'lyeh wgah'nagl
fhtagn.