BLACK SIGHT | Cassie is able to see in complete darkness, her eyes being able to clearly see objects blocked by even the most opaque shadows. When her eyes are using Dark Sight they turn completely black creating a very haunting visage as dark veins appear around her eyes and lips. 

[S]BLACKLIGHT BLAST | Cassie can expel the stored light from her body through her eyes, creating a blast of blacklight. This photon energy can be ejected from the eyes in one of two ways, as concussive blasts or as a powerful continuous beam. When fired as a concussive blast, Cassie can either fire these blasts singularly or in rapid succession. The temperature of this ability is variable with the hottest temperature reaching 1510 degrees Celsius (2750°F) which is even capable melting through solid steel. While Cassie can't force her ability burn any hotter than the above number, extended exposure would eventually raise the temperature of the target higher than the above numbers. However as she needs to constantly absorbed light in order to produce blacklight, Cassie isn't able to maintain the ability long enough to build above the aforementioned limit. Like the temperature, Cassie controls the force behind each concussive blast. Cassie can put enough force behind a full charge to easily lift an object over two hundred pounds into the air. That said, due to the strain, Cassie can't keep consistently manage that much force nor the charge required for those levels of force. [/S]

SHADOW MANIFESTATION | Cassie is able to absorb the photons from any source of light which is then stored in her body causing her skin to illuminate a pale blue glow whenever her abilities are in use. In artificially lit environments this can cause the room to become dim even completely dark as Cassie absorbs the entire source of light. As the area around Cassie grows dim, shadows begin to exponentially multiple as Cassie's abilities grow in the absence of light, making the space even darker leading to a total absence in light. Cassie's area of effect is radial, spreading out from her as she forms the center point. 

SHADOW SOLIDIFICATION | In areas that are naturally dark or manipulated to become dark, Cassie is able to manifest the absence of light; shadows or darkness if you prefer, into a solid opaque form rooted to her body. Most often this takes the form of tendrils which then act as an extension to her own body, lashing out, capable of cutting through even bone. The darker the room, the stronger these tendrils become.