Ashy Slashy, Undead Puppet

Equipped to target creature, that creature gets a
-1/-1 counter every time they attack until Ashy Slashy is destroyed.
When Ashy Slashy is attacked by another creature from its target creature’s owner’s control, and the damage succeeds over Ashy Slashy’s, the excess damage is taken by the target creature’s owner.
“I'm sorry I'm gonna have to kill you, but I think
we’ve learned a lot today!”- Ashy Slashy (Ash vs Evil Dead 2015)