This Shadow Assassin concept embodies an enigmatic figure cloaked in mystery and menace, crafted with a striking palette of deep purple, shimmering gold, and jet black. Their attire blends elegance and utility: a sleek, dark ensemble adorned with intricate golden accents that glint like starlight in the void. Flowing purple fabrics or subtle ethereal trails of shadow weave into their attire, enhancing their mystique and reinforcing their command over the darkness.

The assassin wields an Umbra Blade, a weapon forged from the essence of night itself, its edge shimmering with faint, shifting purple luminescence that seems to drink in the surrounding light. Their movements are fluid and deliberate, every step calculated and silent, leaving behind faint trails of shadow that ripple and dissipate like smoke.

Shadow magic pulses through their veins, manifesting in spectacular purple magical effects that seem alive, swirling and coalescing into intricate patterns of arcane geometry. They summon the darkness to shroud themselves, obscure their presence, or entangle their enemies in grasping tendrils of pure shadow. Their spells combine devastating power with an unsettling beauty, filling the air with an aura of chilling authority.

For close encounters, they may hold a dagger infused with shadow magic, its blade whispering faint, haunting melodies of the void. The dagger appears semi-corporeal, shimmering between solid form and a shadowy haze, emphasizing their connection to the ethereal.

In a semi-realistic art style, their portrayal would focus on capturing the fine textures of their darkened leather armor, the soft glow of their arcane energy, and the delicate interplay of shadow and light.

I recommend running it at 0.7 and I recommend prompting the color theme for black and purple.