DIO, World Over Heaven

0: Exile the top card of your deck. Gain loyalty equal to the exiled cards converted mana cost and return a card from your graveyard to your hand.
-10: Gain an emblem with "You may cast spells with mana value X or less without paying their mana costs, where X is the number of cards in exile."
-X: Exile X cards from target graveyard. You may cast those cards until the end of the turn.