Búho acorazado y fantasioso sobre una ciudad medieval al atardecer

A mischievous owl, wearing a tiny knight's helmet adorned with a fluffy feather plume, perches on a gargoyle atop a gothic cathedral, gazing down at a bustling medieval city at dusk. The owl holds a miniature, glowing sword in one talon. Soft moonlight illuminates the scene, casting long shadows across the cobblestone streets below. The artwork should capture a whimsical, fantasy concept art feel with a touch of storybook illustration, employing dramatic cinematic lighting.