Armillus Dynat, Harrowmaster

Vigilance, first strike
Undercover Surveillance: when this creature enters
the battlefield, you may exchange control of a
target permanent you control and target permanent you don't control.
The permanent that you own deals 4 damage to its controller and you draw a card at the beginning
of your and their upkeep and cannot attack you.
{3}{g}{u}{t}: each creature each opponent controls deals damage equal to its power to its controller