Rysme, Harbinger of Justice

Flying, first strike, haste
Whenever another creature you control dies,
Rysme, Harbinger of Justice deals 3 damage to
each creature that dealt damage to it this turn. If
those creatures would die this turn, exile them
instead.
Whenever an opponent casts a spell or ability targeting another creature you control, Rysme, Harbinger of Justice deals 3 damage to that player