Cheapest priced copy (The Brothers' War Commander): $1.49 at Card Kingdom, near mint, their price list as of .
March of Progress 
Sorcery · Rare · The Brothers' War Commander · #55
Choose target artifact creature you control. For each creature chosen this way, create a token that's a copy of it.
Overload {6}{U} (You may cast this spell for its overload cost. If you do, change its text by replacing all instances of "target" with "each.")
Legal inCommanderLegacyVintage
Not legal inBrawlStandardPioneerModernPauper
2 printings · $1.49 to $1.79 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| The Brothers' War Commander | 8 | Rare | $1.49 | — |
| The Brothers' War Commander | 55 | Rare | $1.79 | — |
11 rulings from Wizards of the Coast
- 14 October 2022Overload doesn’t change when you can cast the spell.
- 14 October 2022If 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.
- 14 October 2022Each 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.
- 14 October 2022If you are instructed to cast a spell with overload “without paying its mana cost,” you can’t choose to pay its overload cost instead.
- 14 October 2022If the copied artifact creature has {X} in its mana cost, X is 0.
- 14 October 2022Casting a spell with overload doesn’t change that spell’s mana cost. You just pay the overload cost instead.
- 14 October 2022Because 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.
- 14 October 2022If 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.
- 14 October 2022Any 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.
- 14 October 2022If the chosen artifact creature is copying something else, then the token enters the battlefield as whatever the chosen creature is copying.
- 14 October 2022Effects 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.