Wylixim, the Dream-Fever

Flying, deathtouch, hexproof from instants
Whenever Wylixim deals combat damage to a
player, target player shuffles their library, draws
two cards, then loses life equal to the number of
cards drawn by players since you last drew a card.
—
"Ask not whence the madness comes," shrieked the
beast into Gardie's mind. "Simply revel in it, and
suffer."