Copy Land

• WWizards of the Coast2024-06-07
  Official Ruling
  You can choose not to copy anything. In that case, Copy Land simply enters the battlefield as an enchantment with an irrelevant ability. We're sure you had your reasons.
• WWizards of the Coast2024-06-07
  Official Ruling
  In the unusual case where the chosen permanent has in its mana cost, X is 0.
• WWizards of the Coast2024-06-07
  Official Ruling
  Copy Land copies exactly what was printed on the original permanent and nothing more, with the listed exception (unless that permanent is itself copying something or is a token; see below). It doesn't copy whether that permanent is tapped or untapped, whether it has any counters on it or Auras attached to it, or any non-copy effects that have changed its power, toughness, types, color, and so on.
• WWizards of the Coast2024-06-07
  Official Ruling
  If the chosen permanent is copying something else (for example, if the chosen permanent is another Copy Land), then your Copy Land enters the battlefield as whatever the chosen permanent copied, with the listed exception.
• WWizards of the Coast2024-06-07
  Official Ruling
  If the chosen permanent is a token, Copy Land copies the original characteristics of that token as stated by the effect that created the token, with the listed exception. Copy Land does not become a token.
• WWizards of the Coast2024-06-07
  Official Ruling
  Any enters-the-battlefield abilities of the copied permanent will trigger when Copy Land enters the battlefield. Any "as [this land] enters the battlefield" or "[this land] enters the battlefield with" abilities of the chosen permanent will also work.
• WWizards of the Coast2024-06-07
  Official Ruling
  If Copy Land somehow enters the battlefield at the same time as another permanent, Copy Land can't become a copy of that permanent. You may choose only a permanent that's already on the battlefield.

Rulings via Scryfall