Khamûl The Easterling

When Khamul The Easterling enters the battlefield or attacks, surveil 1.
Whenever you surveil, put a -1/-1 counter on
target creature an opponent controls then
that creatures controller loses 1 life.
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.)