Darkspawn Shaman

Flying Deathtouch
Whenever a creature you control dies if it didn't
have a -1-1 counter on it return it to the
battlefield with a -1-1 counter.
Whenever a creature enters the battlefield you
may have it enter with either a -1-1 counter or a
+1+1 counter. Whenever a creature dies all other creatures get -1-1 until end of turn.