Ezekiel, the Fleshdreamer

At the beginning of each opponent's upkeep, that
player draws a card, discards a card, and loses 1
life.
At the beginning of Ezekiel's upkeep, if an
opponent drew 3 or more cards in the same turn
since the end of Ezekiel's last turn, play the top
card of your library without paying its mana cost.
Each opponent mills 3.
Horrors have deathtouch.