Cheapest priced copy (Morningtide): $0.79 at Card Kingdom, near mint, their price list as of .
Preeminent Captain 
Creature — Kithkin Soldier · 2/2 · Rare · Morningtide · #20
First strike (This creature deals combat damage before creatures without first strike.)
Whenever this creature attacks, you may put a Soldier creature card from your hand onto the battlefield tapped and attacking.
Legal inCommanderPioneerModernLegacyVintage
Not legal inBrawlStandardPauper
2 printings · $0.79 to $8.99 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Magic 2015 | 25 | Rare | $0.99 | $2.99 |
| Morningtide | 20 | Rare | $0.79 | $8.99 |
2 rulings from Wizards of the Coast
- 18 July 2014You choose what the Soldier you put onto the battlefield is attacking. It doesn’t have to attack the same player or planeswalker as Preeminent Captain.
- 18 July 2014Any abilities of the Soldier creature card that trigger “Whenever [this creature] attacks” won’t trigger because the creature was never declared as an attacking creature.