Juiblex

When Juiblex enters the battlefield, create
X 0/0 Black and Green Ooze creature tokens
with X +1/+1 counters on them.
At the Beginning of your upkeep, Juiblex
gets X +1/+1 counters, where X is the number
of Oozes on the battlefield.
Bereft of domain, the Faceless lord hungers, and you
will feed it, for it is Juiblex