Tenebrous Stalker

Relentless {2}{b} (At the beginning of each
opponent's end step, if a creature an opponent controls died this turn, you may pay {2}{b}. If you
do, return this card from your graveyard to the
battlefield tapped with a -1/-1 counter on
it.)
When Tenebrous Stalker enters the battlefield, if
it entered the battlefield from a graveyard, you
may have target creature get -2/-2 until end of
turn.