Divine Prosecution

Whenever a nontoken creature you control deals combat damage to a creature, put a sin counter
on it.
Whenever a nontoken creature you control dies,
if it had one or more sin counters on it, create an
X/X black Shade creature token, where X is the number of sin counters that were on that creature. If it had no sin counters on it, create a 1/1 white Angel creature token with flying.