Zam can attack Characters in your opponent's build zone. Reserves: Zam does a number of dice of damage equal to her power to a Character in your opponent's build zone. Play only when no unit is attacking.
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.)