Lykraith's Tutelage

Divulge—When revealed while in your hand, you
may pay 2 life. If you do, place a creature
from your graveyard on the top of your library.
Reveal your hand to your opponent. They may
choose a card revealed this way. Discard the
chosen card. Then search your library for a
card with a mana value less or equal to X,
where X is the number of cards in your hand.
Then shuffle your library.