Reserves: Search your deck for a Rebel Starfighter card, show it to your opponent, and put it facedown in your build zone with 1 build counter on it. Shuffle your deck. Play only during your build step.
Keywords
Reserves
Reserves: [Ability]: A layered, static ability that means, "The following ability works while, and only while, it's in the build zone." The granted ability remains to be the ability of its type. (For example, activated abilities granted by Reserves may be disrupted.)