Goth, Servant of Camazotz

As an additional cost to cast this spell, sacrifice a creature.
Flying
Goth, Servant of Camazotz enters with a ritual counter on it.
{r},{b}, Pay 2 life, Sacrifice another creature: Then put a ritual counter on this creature. Then if it has Ten or more ritual counters on it, remove them, exile Goth, Servant of Camazotz, and create Camazotz a legendary black 20/20 Bat God creature token with flying, indestructible, vigilance, trample, and haste. When that token leaves the battlefield return Goth, Serva