Tzeentch, Changer of Ways

Flash, flying, hexproof
If an opponent would draw a card except for the
first one they draw in each of their draw steps,
instead, they discard a card, and you take the top
four cards of their library and separate them into
two face-up piles. That player puts one pile into
their hand and the other into their graveyard.
"You'll die not knowing my true intentions."