Ymiriel of Ancestors

When Ymiriel enters the battlefield, exile all
cards from target player's graveyard.
If a card would enter a player's graveyard from anywhere, instead that player exiles that card
unless they pay {1}.
{2}{w}, {t}: Put target card in exile on the top or
bottom of its owner's library. Ymiriel doesn't
untap during your next untap step.