Cthulhu, Sleeper of R'lyeh

Indestructible
{9}{g}: Destroy three target human creatures
that have madness counters on them, then
create three 5/5 green horror creature tokens, each named Cthulhu Spawn
"Three men were swept up by the flabby claws before anybody turned."
-H.P. Lovecraft in Call of Cthulhu