Reserves: Discard up to 3 cards from your hand. You gain 1 build point for each discarded this way. Halle doesn't untap during your next untap 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.)