Finale of Revelation

Draw {x} cards. If {x} is 10 or more, instead
shuffle your graveyard into your library,
draw {x} cards, untap up to five lands, and you
have no maximum hand size for the rest of
the game.
Exile Finale of Revelation.
Ugin saw the gem that connected Bolas to his
Meditation Realm as the key to his brother's downfall.