Mikaeus, the Unhallowed Double Masters it deals damage equal to

it deals damage equal to the number of time counters on it to any target

The one you think no one else in the world knows

and 'Whenever this creature deals combat damage to a creature

Flash As long as The Wandering Emperor entered this turn

creatures you control have swampwalk

Mikaeus, the Unhallowed Double Masters it deals damage equal toIntimidate (This creature can't 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 owner's control with a +1 +1 counter on it.)