Cheapest priced copy (The Lost Caverns of Ixalan): $0.35 at Card Kingdom, near mint, their price list as of .
Thousand Moons Crackshot 
Creature — Human Soldier · 2/2 · Common · The Lost Caverns of Ixalan · #37
Whenever this creature attacks, you may pay {2}{W}. When you do, tap target creature.
Legal inCommanderBrawlStandardPioneerModernLegacyVintagePauper
1 printing · $0.35 to $0.49 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| The Lost Caverns of Ixalan | 37 | Common | $0.35 | $0.49 |
One ruling from Wizards of the Coast
- 10 November 2023You don't choose a target for Thousand Moons Crackshot's triggered ability at the time it triggers. Rather, a second "reflexive" ability triggers when you pay {2}{W} this way. You choose a target for that ability as it goes on the stack. Each player may respond to this triggered ability as normal.