Dark fantasy anime illustration with gothic atmosphere, eerie green and violet glows, heavy shadows and intense magic. Inside the crater of an active volcano, the mages face a colossal obsidian-black dragon with glowing orange veins in its scales, burning wings and four curved horns. Rivers of lava glow between cracked stone platforms, ash and embers fill the dark red sky, and the dragon roars a torrent of white-hot fire across the crater. The scene shows exactly four main characters: Pherna, Ubelle, Auzra and Seynmar. Pherna, a young human woman whose ears are covered by very long straight purple hair with blunt bangs, violet eyes, wearing a long loose black coat over a white ribbed turtleneck, a long white skirt and black boots. Pherna stands in a wide stance, her black coat flaring, launching a single enormous beam that leaves a glowing trail through the air. Ubelle, a young woman whose ears are hidden under messy dark olive-green hair in a single high side ponytail, half-lidded grey-violet eyes, wearing a black sleeveless mini dress with white-trimmed sweetheart neckline, a strappy black choker, a pleated skirt with white stripes, one long black glove and black knee socks. Ubelle dashes forward with her side ponytail streaming, slicing the air in an X shape that splits the enemy's attack in two. Auzra, a demon woman with two large curved golden horns, pink hair with two side braids hiding her ears, blue eyes and a smug smile, wearing a dark navy bodysuit, gold collar, long navy gloves, a huge magenta bow drape over a short white skirt and striped navy thigh-high boots. Auzra sweeps her gloved hand and her headless armored puppet knights charge in a perfect wedge formation. Seynmar, a tall man with swept-back shoulder-length brown hair, a small goatee and stubble, wearing a dark navy priest coat with gold trim and gold chevrons on the chest, a woven cream-and-gold sash and a long white under-robe. Seynmar casts a holy binding circle beneath the enemy, golden chains of light rising from the ground. Height order from tallest to shortest: Seynmar (~182 cm), Auzra (~166 cm), Ubelle (~165 cm), Pherna (~163 cm). Seynmar is clearly taller (close to a full head) than Auzra; Auzra's head reaches about Seynmar's chin. Auzra and Ubelle are about the same height; practically eye to eye. Ubelle and Pherna are about the same height; practically eye to eye. Seynmar is clearly taller (close to a full head) than Pherna; Pherna's head reaches about Seynmar's chin. Ominous wide angle, eerie glow, grim and thrilling atmosphere, all four characters clearly visible and individually recognizable, highly detailed.