Einhard, Crownless Knight

If Einhard, Crownless Knight would die, instead tap it and put a -1/-1 counter on it. Whenever a creature that dealt damage to Einhard this turn dies, remove all -1/-1 counters from Einhard and put that many +1/+1 counters on it. Whenever Einhard deals lethal damage to a creature or becomes equipped, put a +1/+1 counter on fit.