Cheapest priced copy (Warhammer 40,000 Commander): $1.29 at Card Kingdom, near mint, their price list as of .
Space Marine Devastator 
Creature — Astartes Warrior · 3/3 · Rare · Warhammer 40,000 Commander · #14
Squad {2} (As an additional cost to cast this spell, you may pay {2} any number of times. When this creature enters, create that many tokens that are copies of it.)
Grav-cannon — When this creature enters, destroy up to one target artifact or enchantment.
Legal inCommanderLegacyVintage
Not legal inBrawlStandardPioneerModernPauper
3 printings · $1.29 to $1.49 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Warhammer 40,000 Commander | 14 | Rare | $1.29 | — |
| Warhammer 40,000 Commander | 14★ | Rare | — | — |
| Warhammer 40,000 Tokens | 5 | Common | $1.49 | — |
4 rulings from Wizards of the Coast
- 7 October 2022The tokens created by the squad ability aren't "cast," so any abilities that trigger when a spell is cast won't trigger for the copies.
- 7 October 2022You may pay the squad cost any number of times. You will get a token that is a copy of that permanent for each time you paid the squad cost.
- 7 October 2022If, for some reason, the creature doesn't have the squad ability when it's on the battlefield, the ability won't trigger, even if you've paid the squad cost one or more times.
- 7 October 2022If the spell is countered, the squad ability will not trigger, and no tokens will be created.