Magical Realism Blue Mystery Fear Intrigue Pain Uncomfort Sister Book Cover Ideas with Clouds Cityscape Silhouettes Moon Darkness Lightning Crown Nighttime Poison Velociraptor Brother Chipmunk

A nighttime cityscape outlined in silver by a luminous full moon, occupying the lower third of the cover. A teenage brother and sister stand in the mid-ground, silhouetted against the moon. They face away from one another the boy to the left with a teenager bearing furry chipmunk ears and tail behind him, and the girl to the right with a baby velociraptor with shimmering green scales beside her. Clouds swirl ominously in the top third of the cover, where a ghostly crown floats, backlit by radiant lightning strikes. Purple poison drips in diagonal streaks, pooling over the title "Thunder's Claw," which stretches across the center. The color palette is dominated by shades of blue with contrasting silvers, greens, and purples for dramatic effect.

A sharp, gothic-style serif font is chosen for the title, with elongated edges and subtle cracks to mimic an ancient, mystical feel. The author’s name, "Kaylee Umstead," is displayed in a clean sans-serif font beneath the title, subdued but readable.

The moon takes up the top two-thirds of the background, illuminating the eerie silhouettes of the main characters in opposing positions. The title diagonally crosses the middle in dripping poison purple text. The author’s name is subtly placed at the bottom in silver, blending into the cityscape.