Cheapest priced copy (Tarkir: Dragonstorm): $1.29 at Card Kingdom, near mint, their price list as of .
Tempest Hawk 
Creature — Bird · 2/2 · Common · Tarkir: Dragonstorm · #31
Flying
Whenever this creature deals combat damage to a player, you may search your library for a card named Tempest Hawk, reveal it, put it into your hand, then shuffle.
A deck can have any number of cards named Tempest Hawk.
Legal inCommanderBrawlStandardPioneerModernLegacyVintagePauper
1 printing · $1.29 to $3.49 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Tarkir: Dragonstorm | 31 | Common | $1.29 | $3.49 |