100 Floors of Destiny Book Cover Design - A Journey into the Unknown

Create a book cover for '100 Floors of Destiny' by Wiratama Sagara. The background features a grand, mysterious dungeon with dim lighting and monster shadows lurking in the corners. A spiral staircase leads upwards, hinting at many levels to explore. In the center, place the main character, Arya, wearing shiny armor with intricate details, holding a sword or staff, showing a brave and determined expression. Beside him, add two supporting characters: Mirra, a young sorceress with a magic staff, and Kael, a strong warrior in heavy armor holding a large weapon. Include visual elements like lurking monsters, traps, and mysterious symbols. The overall color scheme should be dark, with shades of blue, purple, and black, enhanced by dramatic light coming from beneath or from Arya.