Mysterious Book

{t}: Draw a card. Gain 1 life. Each opponent
must discard their whole hand or exile a
permanent in play they control.
{1}{t}: You can only use this ability if there are
multiple cards named Mysterious Book in play.
All opponents' cards in play become tapped,
then each opponent sacrifices X land cards and sacrifices X creatures, where X is the number of
cards named Mysterious Book in play. Exile all
cards in each opponent's graveyard.