Mosiah, the Last Nephite King

{t}{1}{u}{u}: Scry 3. Draw up to two cards.
Witness (When this card would enter your graveyard from the battlefield instead exile it. As long as this card is exiled, its abilities remain in effect as if
it were on the battlefield. Anytime a Prophet enters the battlefield, this card leaves exile and is put into your graveyard.)
You may look at the top card of your library at
any time during your turn.