Cheapest priced copy (Game Night): $0.35 at Card Kingdom, near mint, their price list as of .
Inspiring Captain 
Creature — Human Knight · 3/3 · Common · Shadows over Innistrad · #25
When this creature enters, creatures you control get +1/+1 until end of turn.
Legal inCommanderPioneerModernLegacyVintagePauper
Not legal inBrawlStandard
5 printings · $0.35 to $0.49 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Game Night | 14 | Common | $0.35 | — |
| Innistrad Remastered | 28 | Common | $0.35 | $0.49 |
| Jumpstart | 111 | Common | $0.35 | — |
| Core Set 2020 | 25 | Common | $0.35 | $0.49 |
| Shadows over Innistrad | 25 | Common | $0.35 | $0.49 |
2 rulings from Wizards of the Coast
- 8 April 2016The set of creatures affected by Inspiring Captain’s ability is determined as the ability resolves. Creatures you begin to control later in the turn won’t get +1/+1.
- 12 July 2019Inspiring Captain’s triggered ability affects only creatures you control at the time it resolves. Creatures you begin to control later in the turn won’t get +1/+1.