Whisper of Jerzhinar

Put a -1/-1 counter on target creature. If that creature dies this way, you may put two -1/-1 counters on target creature. If that creature dies this way, put three -1/-1 counters on target creature. If that creature dies this way, put four -1/-1 counters on target creature. If that creature dies this way, put five -1/-1 counters on target creature. You lose 3 life for each creature that died this way.