Micolash, Nightmare's Host

When Micolash, host of the Nightmare is dealt
damage, if that damage was less that its toughness,
exile it, then return it to the battlefield under its
owner's control.
When Micolash enters the battlefield from exile,
target opponent mills X cards when X is twice the
number of card you've drawn this game.

"Ahhh Kos... or some say Kosm. Do you
hear our prayers?"