Lilu, Librarian Assistant

Whenever an opponent draws a card they lose 1
life.
As long as you control a Haunted Guardian, Lilu, Librarian Assistant has Hexproof.
Pay X life: Each player draws cards up to the
greatest amount in a player's hand. X is equal to
the greatest amount of cards in a player's hand.
A thirst for knowledge unbound in the greatest
collection of known history.