Cheapest priced copy (Outlaws of Thunder Junction Commander): $0.79 at Card Kingdom, near mint, their price list as of .
Crackling Spellslinger 
Creature — Human Wizard · 2/2 · Rare · Outlaws of Thunder Junction Commander · #25
Flash
When this creature enters, if you cast it, the next instant or sorcery spell you cast this turn has storm. (When you cast that spell, copy it for each spell cast before it this turn. You may choose new targets for the copies.)
Legal inCommanderLegacyVintage
Not legal inBrawlStandardPioneerModernPauper
2 printings · $0.79 to $1.29 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Outlaws of Thunder Junction Commander | 25 | Rare | $1.29 | — |
| Outlaws of Thunder Junction Commander | 61 | Rare | $0.79 | — |
4 rulings from Wizards of the Coast
- 12 April 2024Crackling Spellslinger’s second ability triggers if you cast it from any zone. It doesn’t trigger if you put Crackling Spellslinger onto the battlefield without casting it.
- 12 April 2024The copies of a spell with storm created by its storm ability are put directly onto the stack. They aren’t cast and won’t be counted by other spells with storm cast later in the turn.
- 12 April 2024A copy of a spell can be countered like any other spell, but it must be countered individually. Countering a spell with storm won’t affect the copies.
- 12 April 2024Spells cast from zones other than a player’s hand and spells that were countered or otherwise failed to resolve are counted by the storm ability.