March of Progress

• WWizards of the Coast2022-10-14
  Official Ruling
  Overload doesn’t change when you can cast the spell.
• WWizards of the Coast2022-10-14
  Official Ruling
  If you don’t pay the overload cost of a spell, that spell will have a single target. If you pay the overload cost, the spell won’t have any targets.
• WWizards of the Coast2022-10-14
  Official Ruling
  Each token copies exactly what was printed on the original artifact creature and nothing more (unless that creature is copying something else or is a token; see below. It doesn’t copy whether that creature 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 Coast2022-10-14
  Official Ruling
  If you are instructed to cast a spell with overload “without paying its mana cost,” you can’t choose to pay its overload cost instead.
• WWizards of the Coast2022-10-14
  Official Ruling
  If the copied artifact creature has in its mana cost, X is 0.
• WWizards of the Coast2022-10-14
  Official Ruling
  Casting a spell with overload doesn’t change that spell’s mana cost. You just pay the overload cost instead.
• WWizards of the Coast2022-10-14
  Official Ruling
  Because a spell with overload doesn’t target when its overload cost is paid, it may affect permanents with hexproof or with protection from the appropriate color.
• WWizards of the Coast2022-10-14
  Official Ruling
  If the chosen artifact creature is itself a token, the token March of Progress creates copies the original characteristics of that token as stated by the effect that created that token.
• WWizards of the Coast2022-10-14
  Official Ruling
  Any enters-the-battlefield abilities of the copied artifact creature will trigger when the token enters the battlefield. Any “as [this creature] enters the battlefield” or “[this creature] enters the battlefield with” abilities of the chosen creature will also work.
• WWizards of the Coast2022-10-14
  Official Ruling
  If the chosen artifact creature is copying something else, then the token enters the battlefield as whatever the chosen creature is copying.
• WWizards of the Coast2022-10-14
  Official Ruling
  Effects that cause you to pay more or less for a spell will cause you to pay that much more or less while casting it for its overload cost, too.

Rulings via Scryfall