Jean?, Mother of the End

Flying, hexproof.
When Jean? enters the battlefield, create six 2/2
black End Crystal artifact creature tokens with
defender and "Sacrifice End Crystal: Remove all
counters from Jean?, Mother of the End."
Whenever damage would be dealt to Jean?,
instead put that many -0/-1 counters on it.
Few have heard the fearsome "YEET" of
the Ender Dragon and survived.