In Search of Greatness

• WOTC Official Reminder Textofficial rules
  Scry — Look at the top N cards of your library, then put any number of them on the bottom of your library and the rest on top in any order.

• WWizards of the Coast2021-02-05
  Official Ruling
  If you cast a spell "without paying its mana cost," you can't choose to cast it for any alternative costs. You can, however, pay additional costs, such as kicker costs. If the card has any mandatory additional costs, those must be paid to cast the spell.
• WWizards of the Coast2021-02-05
  Official Ruling
  A permanent spell is an artifact spell, a creature spell, an enchantment spell, or a planeswalker spell.
• WWizards of the Coast2021-02-05
  Official Ruling
  Consider the other permanents you control as the triggered ability resolves to determine which spell you can cast. If the only other permanents you control are lands, or in the unlikely event you don't control any other permanents, you may cast a permanent spell with mana value 1 from your hand.
• WWizards of the Coast2021-02-05
  Official Ruling
  If the spell you cast has in its mana cost, you must choose 0 as the value of X.
• WWizards of the Coast2021-02-05
  Official Ruling
  If a permanent has in its mana cost, X is considered to be 0.

Rulings via Scryfall