Book of Everything

As an additional cost to casting this, you may
discard up to 5 cards. You gain an amnesia
counter for each card you do not discard.
(If you have an amnesia counter, anytime you
would draw a card, instead remove an amnesia
counter)

{2} Sacrifice Book of Everything: Put a page
artifact onto the battlefield. This ability can only
be activated by a player once per game.