March of Progress

Official rulings

1. Overload doesn’t change when you can cast the spell. (2022-10-14)
2. 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. (2022-10-14)
3. 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. (2022-10-14)
4. 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. (2022-10-14)
5. If the copied artifact creature has {X} in its mana cost, X is 0. (2022-10-14)
6. Casting a spell with overload doesn’t change that spell’s mana cost. You just pay the overload cost instead. (2022-10-14)
7. 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. (2022-10-14)
8. 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. (2022-10-14)
9. 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. (2022-10-14)
10. If the chosen artifact creature is copying something else, then the token enters the battlefield as whatever the chosen creature is copying. (2022-10-14)
11. 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. (2022-10-14)