Nox, of Fear

At the beginning of your upkeep, if Nox, of Fear
is in your command zone, each player exiles the
top card of his or her library face down.
Whenever you draw a card, each opponent exiles
the top card of his or her library face down.
{t}: Target opponent exiles a card from their hand
face down. Play this ability only as a sorcery.
"What you feel is not your fear, but his."