Cheapest priced copy (The Brothers' War): $0.35 at Card Kingdom, near mint, their price list as of .
Zephyr Sentinel 
Creature — Human Soldier · 2/1 · Uncommon · The Brothers' War · #74
Flash
Flying
When this creature enters, return up to one other target creature you control to its owner's hand. If it was a Soldier, put a +1/+1 counter on this creature.
Legal inCommanderPioneerModernLegacyVintage
Not legal inBrawlStandardPauper
1 printing · $0.35 to $0.49 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| The Brothers' War | 74 | Uncommon | $0.35 | $0.49 |