Mikaeus, the Unhallowed

Intimidate (This creature cant be blocked except
by artifact creatures and/or creatures that share a color
with it.)
Whenever a Human deals damage to you, destroy
it.
Other non-Human creatures you control get +1/+1 and have undying. (When a creature with undying dies, if it had no +1/+1 counters on it, return it to the battlefield under its owners control with a +1/+1 counter on it.)