Yueli, the Mothermoon

Indestructible, Lifelink.
Other creatures you control have lifelink.
At the end of turn, put a -1/-1 counter on Yueli.
If you gained life that turn, put a +1/+1 counter
on each creature you control.
When Yueli dies, exile it and bring it back to the
battlefield transformed under it's owner's control.
"Nem toda noite deve ser escura."