Silver powers are divided into two categories—physical and mental—though this distinction is not made in the book. Physical powers are those that allow a Silver to control a material (e.g., fire, water, metal) while mental abilities allow for control of people (e.g., Julian’s total control of a person’s mind/body, Elara’s ability to read minds and control actions). Silver powers require an outside source, in contrast to Mare, who can produce her own electricity. Cal and Maven wear bracelets that create sparks of fire, so they can make flame on hand. Julian and Elara’s powers require having someone to control. Julian must make eye contact, and Elara must have the ability to solely concentrate on her target. While magnificent, Silver abilities are not infallible, and Silvers have weaknesses that can be exploited.

Silver powers are genetic and typically passed from father to child. Though Cal and Maven have different mothers, both got the ability to control fire from their father. If Cal and Evangeline had children, they would likely inherit fire-controlling abilities, as well. The cover story Elara provides for Mare shows that this is not always the case. Elara says that Mare’s parents’ powers merged, resulting in Mare’s unique ability to control electricity.