Schema Thief

• WWizards of the Coast2023-04-14
  Official Ruling
  If the copied artifact is copying something else, then the token enters the battlefield as whatever that artifact copied.
• WWizards of the Coast2023-04-14
  Official Ruling
  If the copied artifact is a token, the token that’s created copies the original characteristics of that token as stated by the effect that created that token.
• WWizards of the Coast2023-04-14
  Official Ruling
  Any enters-the-battlefield abilities of the copied artifact will trigger when the token enters the battlefield. Any “as [this artifact] enters the battlefield” or “[this artifact] enters the battlefield with” abilities of the copied artifact will also work.
• WWizards of the Coast2023-04-14
  Official Ruling
  Each of the tokens copy exactly what was printed on the original artifact and nothing else (unless that artifact is copying something else or is a token; see below). It doesn’t copy whether that artifact is tapped or untapped, whether it has any counters on it or Auras and Equipment attached to it, or any non-copy effects that have changed its power, toughness, types, color, and so on.
• WWizards of the Coast2023-04-14
  Official Ruling
  If the copied artifact has in its mana cost, X is 0.

Rulings via Scryfall