Shen, Friend to All

Persist (When this creature dies, if it had no
-1/-1 counters on it, return it to the battlefield under
its owner's control with a -1/-1 counter on it.)
Whenever another creature enters the battlefield
under your control, put a +1/+1 counter on
Shen, Friend to All.
A deck may only include one copy of Shen,
Friend to All.