Arknos, Lich King

If Arknos, Lich King would enter the battlefield
with a +1/+1 counter on it, instead exile it then
return it to the battlefield transformed.
Undying (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.)
Other creatures you control gain undying.