Cheapest priced copy (Conspiracy: Take the Crown): $0.35 at Card Kingdom, near mint, their price list as of .
Affa Guard Hound 
Creature — Dog · 2/2 · Uncommon · Duel Decks: Zendikar vs. Eldrazi · #2
Flash (You may cast this spell any time you could cast an instant.)
When this creature enters, target creature gets +0/+3 until end of turn.
Legal inCommanderModernLegacyVintage
Not legal inBrawlStandardPioneerPauper
4 printings · $0.35 to $0.49 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Conspiracy: Take the Crown | 81 | Uncommon | $0.35 | $0.49 |
| Duel Decks: Zendikar vs. Eldrazi | 2 | Uncommon | $0.35 | — |
| Jumpstart | 81 | Uncommon | $0.35 | — |
| Rise of the Eldrazi | 14 | Uncommon | $0.35 | $0.49 |